diff --git a/lib/rules/at-rule-allowed-list/__tests__/index.js b/lib/rules/at-rule-allowed-list/__tests__/index.js
index 63f4c77d77..9eb959e2c3 100644
--- a/lib/rules/at-rule-allowed-list/__tests__/index.js
+++ b/lib/rules/at-rule-allowed-list/__tests__/index.js
@@ -80,7 +80,7 @@ testRule({
 	ruleName,
 	skipBasicChecks: true,
 
-	config: ['keyframes'],
+	config: 'keyframes',
 
 	accept: [
 		{
diff --git a/lib/rules/at-rule-allowed-list/index.js b/lib/rules/at-rule-allowed-list/index.js
index 87c661e080..963a675055 100644
--- a/lib/rules/at-rule-allowed-list/index.js
+++ b/lib/rules/at-rule-allowed-list/index.js
@@ -17,14 +17,11 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/at-rule-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary) => {
-	// To allow for just a string as a parameter (not only arrays of strings)
-	const primaryValues = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
-			actual: primaryValues,
+			actual: primary,
 			possible: [isString],
 		});
 
@@ -32,8 +29,7 @@ const rule = (primary) => {
 			return;
 		}
 
-		/** @type {string[]} */
-		const atRuleNames = primaryValues;
+		const primaryValues = [primary].flat();
 
 		root.walkAtRules((atRule) => {
 			const name = atRule.name;
@@ -42,7 +38,7 @@ const rule = (primary) => {
 				return;
 			}
 
-			if (atRuleNames.includes(vendor.unprefixed(name).toLowerCase())) {
+			if (primaryValues.includes(vendor.unprefixed(name).toLowerCase())) {
 				return;
 			}
 
diff --git a/lib/rules/at-rule-disallowed-list/__tests__/index.js b/lib/rules/at-rule-disallowed-list/__tests__/index.js
index 174550d71a..d2f325ee4e 100644
--- a/lib/rules/at-rule-disallowed-list/__tests__/index.js
+++ b/lib/rules/at-rule-disallowed-list/__tests__/index.js
@@ -91,7 +91,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: ['keyframes'],
+	config: 'keyframes',
 
 	accept: [
 		{
diff --git a/lib/rules/at-rule-disallowed-list/index.js b/lib/rules/at-rule-disallowed-list/index.js
index 6d1e4db2b7..0722de0e50 100644
--- a/lib/rules/at-rule-disallowed-list/index.js
+++ b/lib/rules/at-rule-disallowed-list/index.js
@@ -17,14 +17,11 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/at-rule-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary) => {
-	// To allow for just a string as a parameter (not only arrays of strings)
-	const primaryValues = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
-			actual: primaryValues,
+			actual: primary,
 			possible: [isString],
 		});
 
@@ -32,8 +29,7 @@ const rule = (primary) => {
 			return;
 		}
 
-		/** @type {string[]} */
-		const atRuleNames = primaryValues;
+		const primaryValues = [primary].flat();
 
 		root.walkAtRules((atRule) => {
 			const name = atRule.name;
@@ -42,7 +38,7 @@ const rule = (primary) => {
 				return;
 			}
 
-			if (!atRuleNames.includes(vendor.unprefixed(name).toLowerCase())) {
+			if (!primaryValues.includes(vendor.unprefixed(name).toLowerCase())) {
 				return;
 			}
 
diff --git a/lib/rules/comment-word-disallowed-list/README.md b/lib/rules/comment-word-disallowed-list/README.md
index e218e2caf4..a68f598fce 100644
--- a/lib/rules/comment-word-disallowed-list/README.md
+++ b/lib/rules/comment-word-disallowed-list/README.md
@@ -13,7 +13,7 @@ Specify a list of disallowed words within comments.
 
 ## Options
 
-`array|string|regexp`: `["array", "of", "words", /or/, "/regex/"]|"word"|"/regex/"`
+`array|string|regexp`: `["array", "of", "words", /or/, "/regex/"]|"word"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/^TODO:/"`), it is interpreted as a regular expression.
 
diff --git a/lib/rules/comment-word-disallowed-list/__tests__/index.js b/lib/rules/comment-word-disallowed-list/__tests__/index.js
index eaa57b41b6..9fd5394a88 100644
--- a/lib/rules/comment-word-disallowed-list/__tests__/index.js
+++ b/lib/rules/comment-word-disallowed-list/__tests__/index.js
@@ -4,7 +4,7 @@ const { messages, ruleName } = require('..');
 
 testRule({
 	ruleName,
-	config: ['bad-word'],
+	config: 'bad-word',
 
 	accept: [
 		{
@@ -219,7 +219,7 @@ testRule({
 testRule({
 	ruleName,
 	customSyntax: 'postcss-scss',
-	config: [['/^TODO:/', 'bad-word']],
+	config: ['/^TODO:/', 'bad-word'],
 
 	accept: [
 		{
diff --git a/lib/rules/comment-word-disallowed-list/index.js b/lib/rules/comment-word-disallowed-list/index.js
index 4a8de7dc7c..2c1c2b8c10 100644
--- a/lib/rules/comment-word-disallowed-list/index.js
+++ b/lib/rules/comment-word-disallowed-list/index.js
@@ -17,7 +17,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/comment-word-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/function-allowed-list/README.md b/lib/rules/function-allowed-list/README.md
index 26d0bf74cf..0efd629e28 100644
--- a/lib/rules/function-allowed-list/README.md
+++ b/lib/rules/function-allowed-list/README.md
@@ -11,14 +11,14 @@ a { transform: scale(1); }
 
 ## Options
 
-`array|string`: `["array", "of", "unprefixed", /functions/ or "regex"]|"function"|"/regex/"`
+`array|string|regex`: `["array", "of", "unprefixed", /functions/, "/regex/"]|"function"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/^rgb/"`), it is interpreted as a regular expression.
 
 Given:
 
 ```json
-["scale", "rgba", "linear-gradient"]
+["scale", "rgba", "/linear-gradient/"]
 ```
 
 The following patterns are considered problems:
diff --git a/lib/rules/function-allowed-list/__tests__/index.js b/lib/rules/function-allowed-list/__tests__/index.js
index f7c188598f..806a60a49f 100644
--- a/lib/rules/function-allowed-list/__tests__/index.js
+++ b/lib/rules/function-allowed-list/__tests__/index.js
@@ -135,7 +135,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: ['/rgb/'],
+	config: '/rgb/',
 
 	accept: [
 		{
diff --git a/lib/rules/function-allowed-list/index.js b/lib/rules/function-allowed-list/index.js
index 6efb2b8baf..7b34fd4ee2 100644
--- a/lib/rules/function-allowed-list/index.js
+++ b/lib/rules/function-allowed-list/index.js
@@ -20,13 +20,11 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/function-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
-	const list = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
-			actual: list,
+			actual: primary,
 			possible: [isString, isRegExp],
 		});
 
@@ -46,7 +44,7 @@ const rule = (primary) => {
 					return;
 				}
 
-				if (matchesStringOrRegExp(vendor.unprefixed(node.value), list)) {
+				if (matchesStringOrRegExp(vendor.unprefixed(node.value), primary)) {
 					return;
 				}
 
diff --git a/lib/rules/function-disallowed-list/README.md b/lib/rules/function-disallowed-list/README.md
index 4cbb55872f..5b577eda82 100644
--- a/lib/rules/function-disallowed-list/README.md
+++ b/lib/rules/function-disallowed-list/README.md
@@ -11,7 +11,7 @@ a { transform: scale(1); }
 
 ## Options
 
-`array|string`: `["array", "of", "unprefixed", /functions/ or "regex"]|"function"|"/regex/"`
+`array|string|regex`: `["array", "of", "unprefixed", /functions/, "regex"]|"function"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/^rgb/"`), it is interpreted as a regular expression.
 
diff --git a/lib/rules/function-disallowed-list/__tests__/index.js b/lib/rules/function-disallowed-list/__tests__/index.js
index 583d756e86..f878f511f0 100644
--- a/lib/rules/function-disallowed-list/__tests__/index.js
+++ b/lib/rules/function-disallowed-list/__tests__/index.js
@@ -102,7 +102,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: ['/rgb/'],
+	config: '/rgb/',
 
 	accept: [
 		{
diff --git a/lib/rules/function-disallowed-list/index.js b/lib/rules/function-disallowed-list/index.js
index b2331820e6..1ee81ed9f2 100644
--- a/lib/rules/function-disallowed-list/index.js
+++ b/lib/rules/function-disallowed-list/index.js
@@ -20,7 +20,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/function-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/function-url-scheme-allowed-list/README.md b/lib/rules/function-url-scheme-allowed-list/README.md
index 86d8801a93..2e89691e92 100644
--- a/lib/rules/function-url-scheme-allowed-list/README.md
+++ b/lib/rules/function-url-scheme-allowed-list/README.md
@@ -18,7 +18,7 @@ This rule ignores:
 
 ## Options
 
-`array|string|regex`: `["array", "of", /schemes/ or "/regex/"]|"scheme"|/regex/`
+`array|string|regex`: `["array", "of", /schemes/, "/regex/"]|"scheme"|"/regex/"|/regex/`
 
 Given:
 
diff --git a/lib/rules/function-url-scheme-allowed-list/__tests__/index.js b/lib/rules/function-url-scheme-allowed-list/__tests__/index.js
index e637888b59..b1d433c775 100644
--- a/lib/rules/function-url-scheme-allowed-list/__tests__/index.js
+++ b/lib/rules/function-url-scheme-allowed-list/__tests__/index.js
@@ -158,7 +158,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [[]],
+	config: [],
 
 	accept: [
 		{
@@ -193,7 +193,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [''],
+	config: '',
 
 	accept: [
 		{
@@ -228,7 +228,6 @@ testRule({
 
 testRule({
 	ruleName,
-	// primaryOptionArray
 	config: ['uri', 'file', 'https'],
 
 	accept: [
@@ -250,7 +249,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [['/^http/']],
+	config: ['/^http/'],
 
 	accept: [
 		{
@@ -283,7 +282,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [[/^http/]],
+	config: [/^http/],
 
 	accept: [
 		{
diff --git a/lib/rules/function-url-scheme-allowed-list/index.js b/lib/rules/function-url-scheme-allowed-list/index.js
index dbd1dfc72a..3214b780f9 100644
--- a/lib/rules/function-url-scheme-allowed-list/index.js
+++ b/lib/rules/function-url-scheme-allowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/function-url-scheme-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/function-url-scheme-disallowed-list/README.md b/lib/rules/function-url-scheme-disallowed-list/README.md
index fcb18b4aa4..0f79a7d960 100644
--- a/lib/rules/function-url-scheme-disallowed-list/README.md
+++ b/lib/rules/function-url-scheme-disallowed-list/README.md
@@ -18,7 +18,7 @@ This rule ignores:
 
 ## Options
 
-`array|string|regex`: `["array", "of", /schemes/ or "/regex/"]|"scheme"|/regex/`
+`array|string|regex`: `["array", "of", /schemes/, "/regex/"]|"scheme"|"/regex/"|/regex/`
 
 Given:
 
diff --git a/lib/rules/function-url-scheme-disallowed-list/__tests__/index.js b/lib/rules/function-url-scheme-disallowed-list/__tests__/index.js
index 3c568e65a0..4844ab11d2 100644
--- a/lib/rules/function-url-scheme-disallowed-list/__tests__/index.js
+++ b/lib/rules/function-url-scheme-disallowed-list/__tests__/index.js
@@ -4,7 +4,7 @@ const { messages, ruleName } = require('..');
 
 testRule({
 	ruleName,
-	config: [[]],
+	config: [],
 
 	accept: [
 		{
@@ -15,7 +15,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [''],
+	config: '',
 
 	accept: [
 		{
@@ -184,7 +184,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [['/^http/']],
+	config: ['/^http/'],
 
 	accept: [
 		{
@@ -220,7 +220,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [[/^http/]],
+	config: [/^http/],
 
 	accept: [
 		{
diff --git a/lib/rules/function-url-scheme-disallowed-list/index.js b/lib/rules/function-url-scheme-disallowed-list/index.js
index 59d5b4bb42..50a97c6915 100644
--- a/lib/rules/function-url-scheme-disallowed-list/index.js
+++ b/lib/rules/function-url-scheme-disallowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/function-url-scheme-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/media-feature-name-allowed-list/README.md b/lib/rules/media-feature-name-allowed-list/README.md
index 0efd5fc808..528618216f 100644
--- a/lib/rules/media-feature-name-allowed-list/README.md
+++ b/lib/rules/media-feature-name-allowed-list/README.md
@@ -11,7 +11,7 @@ Specify a list of allowed media feature names.
 
 ## Options
 
-`array|string|regex`: `["array", "of", "unprefixed", /media-features/ or "regex"]|"media-feature"|/regex/`
+`array|string|regex`: `["array", "of", "unprefixed", /media-features/, "regex"]|"media-feature"|"/regex/"|/regex/`
 
 Given:
 
diff --git a/lib/rules/media-feature-name-allowed-list/__tests__/index.js b/lib/rules/media-feature-name-allowed-list/__tests__/index.js
index d874706594..f1f186933e 100644
--- a/lib/rules/media-feature-name-allowed-list/__tests__/index.js
+++ b/lib/rules/media-feature-name-allowed-list/__tests__/index.js
@@ -101,7 +101,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [/^my-/],
+	config: /^my-/,
 
 	accept: [
 		{
diff --git a/lib/rules/media-feature-name-allowed-list/index.js b/lib/rules/media-feature-name-allowed-list/index.js
index 345708371c..ab992bdbe3 100644
--- a/lib/rules/media-feature-name-allowed-list/index.js
+++ b/lib/rules/media-feature-name-allowed-list/index.js
@@ -22,7 +22,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/media-feature-name-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/media-feature-name-disallowed-list/README.md b/lib/rules/media-feature-name-disallowed-list/README.md
index b2a1ee623b..7256cca72d 100644
--- a/lib/rules/media-feature-name-disallowed-list/README.md
+++ b/lib/rules/media-feature-name-disallowed-list/README.md
@@ -11,7 +11,7 @@ Specify a list of disallowed media feature names.
 
 ## Options
 
-`array|string|regex`: `["array", "of", "unprefixed", /media-features/ or "regex"]|"media-feature"|/regex/`
+`array|string|regex`: `["array", "of", "unprefixed", /media-features/, "regex"]|"media-feature"|"/regex/"|/regex/`
 
 Given:
 
diff --git a/lib/rules/media-feature-name-disallowed-list/__tests__/index.js b/lib/rules/media-feature-name-disallowed-list/__tests__/index.js
index 734ae2c4ef..6c169831e0 100644
--- a/lib/rules/media-feature-name-disallowed-list/__tests__/index.js
+++ b/lib/rules/media-feature-name-disallowed-list/__tests__/index.js
@@ -99,7 +99,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [/^my-/],
+	config: /^my-/,
 
 	accept: [
 		{
diff --git a/lib/rules/media-feature-name-disallowed-list/index.js b/lib/rules/media-feature-name-disallowed-list/index.js
index 5c3bb69ed7..df96afbf85 100644
--- a/lib/rules/media-feature-name-disallowed-list/index.js
+++ b/lib/rules/media-feature-name-disallowed-list/index.js
@@ -22,7 +22,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/media-feature-name-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/property-allowed-list/README.md b/lib/rules/property-allowed-list/README.md
index b39cd7b79e..d1e7846503 100644
--- a/lib/rules/property-allowed-list/README.md
+++ b/lib/rules/property-allowed-list/README.md
@@ -13,7 +13,7 @@ This rule ignores variables (`$sass`, `@less`, `--custom-property`).
 
 ## Options
 
-`array|string`: `["array", "of", "unprefixed", /properties/ or "regex"]|"property"|"/regex/"`|/regex/
+`array|string|regex`: `["array", "of", "unprefixed", /properties/, "regex"]|"property"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/^background/"`), it is interpreted as a regular expression. This allows, for example, easy targeting of shorthands: `/^background/` will match `background`, `background-size`, `background-color`, etc.
 
diff --git a/lib/rules/property-allowed-list/__tests__/index.js b/lib/rules/property-allowed-list/__tests__/index.js
index b868f89b5a..68c5ce8182 100644
--- a/lib/rules/property-allowed-list/__tests__/index.js
+++ b/lib/rules/property-allowed-list/__tests__/index.js
@@ -20,7 +20,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [[]],
+	config: [],
 
 	reject: [
 		{
@@ -95,7 +95,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [['/^background/']],
+	config: '/^background/',
 
 	accept: [
 		{
@@ -131,7 +131,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [[/^background/]],
+	config: /^background/,
 
 	accept: [
 		{
diff --git a/lib/rules/property-allowed-list/index.js b/lib/rules/property-allowed-list/index.js
index 4312dcf339..3cd1a2d764 100644
--- a/lib/rules/property-allowed-list/index.js
+++ b/lib/rules/property-allowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/property-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/property-disallowed-list/README.md b/lib/rules/property-disallowed-list/README.md
index 9119a62cf0..e438c61834 100644
--- a/lib/rules/property-disallowed-list/README.md
+++ b/lib/rules/property-disallowed-list/README.md
@@ -11,7 +11,7 @@ a { text-rendering: optimizeLegibility; }
 
 ## Options
 
-`array|string`: `["array", "of", "unprefixed", /properties/ or "regex"]|"property"|"/regex/"`|/regex/
+`array|string|regex`: `["array", "of", "unprefixed", /properties/, "regex"]|"property"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/^background/"`), it is interpreted as a regular expression. This allows, for example, easy targeting of shorthands: `/^background/` will match `background`, `background-size`, `background-color`, etc.
 
diff --git a/lib/rules/property-disallowed-list/__tests__/index.js b/lib/rules/property-disallowed-list/__tests__/index.js
index ff6a065fd7..644bf8e620 100644
--- a/lib/rules/property-disallowed-list/__tests__/index.js
+++ b/lib/rules/property-disallowed-list/__tests__/index.js
@@ -17,7 +17,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [[]],
+	config: [],
 
 	accept: [
 		{
@@ -77,7 +77,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [['/^background/']],
+	config: '/^background/',
 
 	accept: [
 		{
@@ -122,7 +122,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: [[/^background/]],
+	config: /^background/,
 
 	accept: [
 		{
diff --git a/lib/rules/property-disallowed-list/index.js b/lib/rules/property-disallowed-list/index.js
index 39dd76a260..f4c9e5fe89 100644
--- a/lib/rules/property-disallowed-list/index.js
+++ b/lib/rules/property-disallowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/property-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/selector-attribute-name-disallowed-list/README.md b/lib/rules/selector-attribute-name-disallowed-list/README.md
index 79d9078339..11f5098453 100644
--- a/lib/rules/selector-attribute-name-disallowed-list/README.md
+++ b/lib/rules/selector-attribute-name-disallowed-list/README.md
@@ -11,7 +11,7 @@ Specify a list of disallowed attribute names.
 
 ## Options
 
-`array|string|regex`: `["array", "of", /names/ or "regex"]|"name"|/regex/`
+`array|string|regex`: `["array", "of", /names/, "regex"]|"name"|"/regex/"|/regex/`
 
 Given:
 
diff --git a/lib/rules/selector-attribute-name-disallowed-list/__tests__/index.js b/lib/rules/selector-attribute-name-disallowed-list/__tests__/index.js
index 903abac35c..cdf63cadf0 100644
--- a/lib/rules/selector-attribute-name-disallowed-list/__tests__/index.js
+++ b/lib/rules/selector-attribute-name-disallowed-list/__tests__/index.js
@@ -67,3 +67,21 @@ testRule({
 		},
 	],
 });
+
+testRule({
+	ruleName,
+	config: /^data-/,
+
+	accept: [
+		{
+			code: 'a[title] { }',
+		},
+	],
+
+	reject: [
+		{
+			code: 'a[data-foo="bar"] { }',
+			message: messages.rejected('data-foo'),
+		},
+	],
+});
diff --git a/lib/rules/selector-attribute-name-disallowed-list/index.js b/lib/rules/selector-attribute-name-disallowed-list/index.js
index 8b2c4d0619..93c9fb9ee2 100644
--- a/lib/rules/selector-attribute-name-disallowed-list/index.js
+++ b/lib/rules/selector-attribute-name-disallowed-list/index.js
@@ -18,13 +18,11 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-attribute-name-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
-	const list = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
-			actual: list,
+			actual: primary,
 			possible: [isString, isRegExp],
 		});
 
@@ -45,7 +43,7 @@ const rule = (primary) => {
 				selectorTree.walkAttributes((attributeNode) => {
 					const attributeName = attributeNode.qualifiedAttribute;
 
-					if (!matchesStringOrRegExp(attributeName, list)) {
+					if (!matchesStringOrRegExp(attributeName, primary)) {
 						return;
 					}
 
diff --git a/lib/rules/selector-attribute-operator-allowed-list/__tests__/index.js b/lib/rules/selector-attribute-operator-allowed-list/__tests__/index.js
index 4e34462d57..14329002f7 100644
--- a/lib/rules/selector-attribute-operator-allowed-list/__tests__/index.js
+++ b/lib/rules/selector-attribute-operator-allowed-list/__tests__/index.js
@@ -78,7 +78,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: ['='],
+	config: '=',
 
 	accept: [
 		{
diff --git a/lib/rules/selector-attribute-operator-allowed-list/index.js b/lib/rules/selector-attribute-operator-allowed-list/index.js
index 7b5761c9ed..9944b74b4d 100644
--- a/lib/rules/selector-attribute-operator-allowed-list/index.js
+++ b/lib/rules/selector-attribute-operator-allowed-list/index.js
@@ -17,13 +17,11 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-attribute-operator-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary) => {
-	const list = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
-			actual: list,
+			actual: primary,
 			possible: [isString],
 		});
 
@@ -31,6 +29,8 @@ const rule = (primary) => {
 			return;
 		}
 
+		const primaryValues = [primary].flat();
+
 		root.walkRules((ruleNode) => {
 			if (!isStandardSyntaxRule(ruleNode)) {
 				return;
@@ -44,7 +44,7 @@ const rule = (primary) => {
 				selectorTree.walkAttributes((attributeNode) => {
 					const operator = attributeNode.operator;
 
-					if (!operator || (operator && list.includes(operator))) {
+					if (!operator || (operator && primaryValues.includes(operator))) {
 						return;
 					}
 
diff --git a/lib/rules/selector-attribute-operator-disallowed-list/__tests__/index.js b/lib/rules/selector-attribute-operator-disallowed-list/__tests__/index.js
index c97dea3e70..ce6036e55a 100644
--- a/lib/rules/selector-attribute-operator-disallowed-list/__tests__/index.js
+++ b/lib/rules/selector-attribute-operator-disallowed-list/__tests__/index.js
@@ -72,7 +72,7 @@ testRule({
 testRule({
 	ruleName,
 
-	config: ['*='],
+	config: '*=',
 
 	accept: [
 		{
diff --git a/lib/rules/selector-attribute-operator-disallowed-list/index.js b/lib/rules/selector-attribute-operator-disallowed-list/index.js
index b2adcf288e..9a25580bcd 100644
--- a/lib/rules/selector-attribute-operator-disallowed-list/index.js
+++ b/lib/rules/selector-attribute-operator-disallowed-list/index.js
@@ -17,13 +17,11 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-attribute-operator-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary) => {
-	const list = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
-			actual: list,
+			actual: primary,
 			possible: [isString],
 		});
 
@@ -31,6 +29,8 @@ const rule = (primary) => {
 			return;
 		}
 
+		const primaryValues = [primary].flat();
+
 		root.walkRules((ruleNode) => {
 			if (!isStandardSyntaxRule(ruleNode)) {
 				return;
@@ -44,7 +44,7 @@ const rule = (primary) => {
 				selectorTree.walkAttributes((attributeNode) => {
 					const operator = attributeNode.operator;
 
-					if (!operator || (operator && !list.includes(operator))) {
+					if (!operator || (operator && !primaryValues.includes(operator))) {
 						return;
 					}
 
diff --git a/lib/rules/selector-combinator-allowed-list/__tests__/index.js b/lib/rules/selector-combinator-allowed-list/__tests__/index.js
index 2d07cd78c9..ed872dbcc0 100644
--- a/lib/rules/selector-combinator-allowed-list/__tests__/index.js
+++ b/lib/rules/selector-combinator-allowed-list/__tests__/index.js
@@ -58,7 +58,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: ['~'],
+	config: '~',
 	skipBasicChecks: true,
 
 	accept: [
diff --git a/lib/rules/selector-combinator-allowed-list/index.js b/lib/rules/selector-combinator-allowed-list/index.js
index ece5053cea..b2ded9cd31 100644
--- a/lib/rules/selector-combinator-allowed-list/index.js
+++ b/lib/rules/selector-combinator-allowed-list/index.js
@@ -18,7 +18,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-combinator-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/selector-combinator-disallowed-list/__tests__/index.js b/lib/rules/selector-combinator-disallowed-list/__tests__/index.js
index ad3c6e56dd..cb0353d698 100644
--- a/lib/rules/selector-combinator-disallowed-list/__tests__/index.js
+++ b/lib/rules/selector-combinator-disallowed-list/__tests__/index.js
@@ -64,3 +64,21 @@ testRule({
 		},
 	],
 });
+
+testRule({
+	ruleName,
+	config: '>',
+
+	accept: [
+		{
+			code: 'a {}',
+		},
+	],
+
+	reject: [
+		{
+			code: 'a > b {}',
+			message: messages.rejected('>'),
+		},
+	],
+});
diff --git a/lib/rules/selector-combinator-disallowed-list/index.js b/lib/rules/selector-combinator-disallowed-list/index.js
index a02a20f371..3e19b65e8a 100644
--- a/lib/rules/selector-combinator-disallowed-list/index.js
+++ b/lib/rules/selector-combinator-disallowed-list/index.js
@@ -18,7 +18,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-combinator-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/selector-disallowed-list/README.md b/lib/rules/selector-disallowed-list/README.md
index d328e3dbff..ba430d5060 100644
--- a/lib/rules/selector-disallowed-list/README.md
+++ b/lib/rules/selector-disallowed-list/README.md
@@ -11,7 +11,7 @@ Specify a list of disallowed selectors.
 
 ## Options
 
-`array|string|regexp`: `["array", "of", "selectors", /or/, "/regex/"]|"selector"|"/regex/"`
+`array|string|regexp`: `["array", "of", "selectors", /or/, "/regex/"]|"selector"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/\.foo/"`), it is interpreted as a regular expression.
 
diff --git a/lib/rules/selector-disallowed-list/__tests__/index.js b/lib/rules/selector-disallowed-list/__tests__/index.js
index c78f6830aa..11282ef2a4 100644
--- a/lib/rules/selector-disallowed-list/__tests__/index.js
+++ b/lib/rules/selector-disallowed-list/__tests__/index.js
@@ -60,7 +60,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [/\.foo[^>]*>.*\.bar/],
+	config: /\.foo[^>]*>.*\.bar/,
 
 	accept: [
 		{
diff --git a/lib/rules/selector-disallowed-list/index.js b/lib/rules/selector-disallowed-list/index.js
index bd64407730..b075b2800d 100644
--- a/lib/rules/selector-disallowed-list/index.js
+++ b/lib/rules/selector-disallowed-list/index.js
@@ -17,13 +17,11 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
-	const list = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
-			actual: list,
+			actual: primary,
 			possible: [isString, isRegExp],
 		});
 
@@ -38,7 +36,7 @@ const rule = (primary) => {
 
 			const selector = ruleNode.selector;
 
-			if (!matchesStringOrRegExp(selector, list)) {
+			if (!matchesStringOrRegExp(selector, primary)) {
 				return;
 			}
 
diff --git a/lib/rules/selector-pseudo-class-allowed-list/README.md b/lib/rules/selector-pseudo-class-allowed-list/README.md
index 908116b66c..cb5a3bdc19 100644
--- a/lib/rules/selector-pseudo-class-allowed-list/README.md
+++ b/lib/rules/selector-pseudo-class-allowed-list/README.md
@@ -13,7 +13,7 @@ This rule ignores selectors that use variable interpolation e.g. `:#{$variable}
 
 ## Options
 
-`array|string|regex`: `["array", "of", "unprefixed", /pseudo-classes/ or "/regex/"]|"pseudo-class"|/regex/`
+`array|string|regex`: `["array", "of", "unprefixed", /pseudo-classes/, "/regex/"]|"pseudo-class"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/^nth-/"`), it is interpreted as a regular expression. This allows, for example, easy targeting of shorthands: `/^nth-/` will match `nth-child`, `nth-last-child`, `nth-of-type`, etc.
 
diff --git a/lib/rules/selector-pseudo-class-allowed-list/__tests__/index.js b/lib/rules/selector-pseudo-class-allowed-list/__tests__/index.js
index 995058d411..a659f7e259 100644
--- a/lib/rules/selector-pseudo-class-allowed-list/__tests__/index.js
+++ b/lib/rules/selector-pseudo-class-allowed-list/__tests__/index.js
@@ -107,7 +107,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [['/^nth/']],
+	config: '/^nth/',
 	skipBasicChecks: true,
 
 	accept: [
@@ -134,7 +134,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [[/^nth/]],
+	config: /^nth/,
 	skipBasicChecks: true,
 
 	accept: [
diff --git a/lib/rules/selector-pseudo-class-allowed-list/index.js b/lib/rules/selector-pseudo-class-allowed-list/index.js
index a7685cbfd1..23f4d1cbb8 100644
--- a/lib/rules/selector-pseudo-class-allowed-list/index.js
+++ b/lib/rules/selector-pseudo-class-allowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-pseudo-class-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/selector-pseudo-class-disallowed-list/README.md b/lib/rules/selector-pseudo-class-disallowed-list/README.md
index 01142df60a..c3945579df 100644
--- a/lib/rules/selector-pseudo-class-disallowed-list/README.md
+++ b/lib/rules/selector-pseudo-class-disallowed-list/README.md
@@ -13,7 +13,7 @@ This rule ignores selectors that use variable interpolation e.g. `:#{$variable}
 
 ## Options
 
-`array|string|regex`: `["array", "of", "unprefixed", /pseudo-classes/ or "/regex/"]|"pseudo-class"|/regex/`
+`array|string|regex`: `["array", "of", "unprefixed", /pseudo-classes/, "/regex/"]|"pseudo-class"|"/regex/"|/regex/`
 
 If a string is surrounded with `"/"` (e.g. `"/^nth-/"`), it is interpreted as a regular expression. This allows, for example, easy targeting of shorthands: `/^nth-/` will match `nth-child`, `nth-last-child`, `nth-of-type`, etc.
 
diff --git a/lib/rules/selector-pseudo-class-disallowed-list/__tests__/index.js b/lib/rules/selector-pseudo-class-disallowed-list/__tests__/index.js
index b067a84f1b..bb860e7186 100644
--- a/lib/rules/selector-pseudo-class-disallowed-list/__tests__/index.js
+++ b/lib/rules/selector-pseudo-class-disallowed-list/__tests__/index.js
@@ -98,7 +98,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [['/^last/']],
+	config: '/^last/',
 	skipBasicChecks: true,
 
 	accept: [
@@ -131,7 +131,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [[/^last/]],
+	config: /^last/,
 	skipBasicChecks: true,
 
 	accept: [
@@ -152,7 +152,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: [[/(not|matches|has)/]],
+	config: [/(not|matches|has)/],
 	skipBasicChecks: true,
 
 	accept: [
diff --git a/lib/rules/selector-pseudo-class-disallowed-list/index.js b/lib/rules/selector-pseudo-class-disallowed-list/index.js
index 85a13141ae..994547b83d 100644
--- a/lib/rules/selector-pseudo-class-disallowed-list/index.js
+++ b/lib/rules/selector-pseudo-class-disallowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-pseudo-class-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/selector-pseudo-element-allowed-list/README.md b/lib/rules/selector-pseudo-element-allowed-list/README.md
index 84630f6c64..34c166ed68 100644
--- a/lib/rules/selector-pseudo-element-allowed-list/README.md
+++ b/lib/rules/selector-pseudo-element-allowed-list/README.md
@@ -16,7 +16,7 @@ This rule ignores:
 
 ## Options
 
-`array|string|regex`: `["array", "of", "unprefixed", "pseudo-elements" or "regex"]|"pseudo-element"|/regex/`
+`array|string|regex`: `["array", "of", "unprefixed", /pseudo-elements/, "/regex/"]|"pseudo-element"|"/regex/"|/regex/`
 
 Given:
 
diff --git a/lib/rules/selector-pseudo-element-allowed-list/index.js b/lib/rules/selector-pseudo-element-allowed-list/index.js
index c3ac82850f..7221e87360 100644
--- a/lib/rules/selector-pseudo-element-allowed-list/index.js
+++ b/lib/rules/selector-pseudo-element-allowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-pseudo-element-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/selector-pseudo-element-disallowed-list/README.md b/lib/rules/selector-pseudo-element-disallowed-list/README.md
index c4dde13422..b38f2e56b7 100644
--- a/lib/rules/selector-pseudo-element-disallowed-list/README.md
+++ b/lib/rules/selector-pseudo-element-disallowed-list/README.md
@@ -16,7 +16,7 @@ This rule ignores:
 
 ## Options
 
-`array|string|regex`: `["array", "of", "unprefixed", "pseudo-elements" or "regex"]|"pseudo-element"|/regex/`
+`array|string|regex`: `["array", "of", "unprefixed", /pseudo-elements/, "/regex/"]|"pseudo-element"|"/regex/"|/regex/`
 
 Given:
 
diff --git a/lib/rules/selector-pseudo-element-disallowed-list/__tests__/index.js b/lib/rules/selector-pseudo-element-disallowed-list/__tests__/index.js
index 92c0b32a1b..192b3f7db3 100644
--- a/lib/rules/selector-pseudo-element-disallowed-list/__tests__/index.js
+++ b/lib/rules/selector-pseudo-element-disallowed-list/__tests__/index.js
@@ -85,7 +85,7 @@ testRule({
 
 testRule({
 	ruleName,
-	config: ['before'],
+	config: 'before',
 	skipBasicChecks: true,
 	customSyntax: 'postcss-scss',
 
diff --git a/lib/rules/selector-pseudo-element-disallowed-list/index.js b/lib/rules/selector-pseudo-element-disallowed-list/index.js
index 1bf3da8942..a2b8afaa62 100644
--- a/lib/rules/selector-pseudo-element-disallowed-list/index.js
+++ b/lib/rules/selector-pseudo-element-disallowed-list/index.js
@@ -19,7 +19,7 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/selector-pseudo-element-disallowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | RegExp | Array<string | RegExp>>} */
 const rule = (primary) => {
 	return (root, result) => {
 		const validOptions = validateOptions(result, ruleName, {
diff --git a/lib/rules/unit-allowed-list/index.js b/lib/rules/unit-allowed-list/index.js
index d5416d48b3..4161962746 100644
--- a/lib/rules/unit-allowed-list/index.js
+++ b/lib/rules/unit-allowed-list/index.js
@@ -21,16 +21,14 @@ const meta = {
 	url: 'https://stylelint.io/user-guide/rules/list/unit-allowed-list',
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary, secondaryOptions) => {
-	const list = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(
 			result,
 			ruleName,
 			{
-				actual: list,
+				actual: primary,
 				possible: [isString],
 			},
 			{
@@ -47,6 +45,8 @@ const rule = (primary, secondaryOptions) => {
 			return;
 		}
 
+		const primaryValues = [primary].flat();
+
 		/**
 		 * @template {import('postcss').AtRule | import('postcss').Declaration} T
 		 * @param {T} node
@@ -74,7 +74,7 @@ const rule = (primary, secondaryOptions) => {
 
 				const unit = getUnitFromValueNode(valueNode);
 
-				if (!unit || (unit && list.includes(unit.toLowerCase()))) {
+				if (!unit || (unit && primaryValues.includes(unit.toLowerCase()))) {
 					return;
 				}
 
diff --git a/lib/rules/unit-disallowed-list/index.js b/lib/rules/unit-disallowed-list/index.js
index 1e81e77b4c..e02489445d 100644
--- a/lib/rules/unit-disallowed-list/index.js
+++ b/lib/rules/unit-disallowed-list/index.js
@@ -37,16 +37,14 @@ const getMediaFeatureName = (mediaFeatureNode) => {
 	return match ? match[1] : undefined;
 };
 
-/** @type {import('stylelint').Rule} */
+/** @type {import('stylelint').Rule<string | string[]>} */
 const rule = (primary, secondaryOptions) => {
-	const list = [primary].flat();
-
 	return (root, result) => {
 		const validOptions = validateOptions(
 			result,
 			ruleName,
 			{
-				actual: list,
+				actual: primary,
 				possible: [isString],
 			},
 			{
@@ -63,6 +61,8 @@ const rule = (primary, secondaryOptions) => {
 			return;
 		}
 
+		const primaryValues = [primary].flat();
+
 		/**
 		 * @param {import('postcss').Node} node
 		 * @param {number} nodeIndex
@@ -75,7 +75,7 @@ const rule = (primary, secondaryOptions) => {
 			const unit = getUnitFromValueNode(valueNode);
 
 			// There is not unit or it is not configured as a problem
-			if (!unit || (unit && !list.includes(unit.toLowerCase()))) {
+			if (!unit || (unit && !primaryValues.includes(unit.toLowerCase()))) {
 				return;
 			}
 
diff --git a/lib/utils/containsString.js b/lib/utils/containsString.js
index 4ef1f3fd61..34db7d899f 100644
--- a/lib/utils/containsString.js
+++ b/lib/utils/containsString.js
@@ -11,9 +11,9 @@ const { isString } = require('./validateTypes');
  * Any strings starting and ending with `/` are ignored. Use the
  * matchesStringOrRegExp() util to match regexes.
  *
+ * @template {unknown} T
  * @param {string} input
- * @param {string | string[]} comparison
- *
+ * @param {T | T[]} comparison
  * @returns {ReturnValue}
  */
 module.exports = function containsString(input, comparison) {
@@ -33,10 +33,8 @@ module.exports = function containsString(input, comparison) {
 };
 
 /**
- *
  * @param {string} value
- * @param {string} comparison
- *
+ * @param {unknown} comparison
  * @returns {ReturnValue}
  */
 function testAgainstString(value, comparison) {