PHP: Custom WordPress functions to fetch a list of registered post types that support a specific feature or a set of features. Inspired by Micah Wood's (@wpscholar) get-post-types-supporting.php (https://gist.github.com/wpscholar/6273186).

get-post-types-by-support-function.php

<?php

/**
 * Get a list of post type names that support a specific feature.
 *
 * @since 4.4.0
 *
 * @global array $_wp_post_type_features Associative array of post types with accepted features.
 * 
 * @param string|array $feature String of a single post type support feature or array
 *                              (e.g., `'title'` or `array( 'title' => true )`).
 *
 * @return array $post_types Array of post type names that support a feature.
 */
function get_post_types_by_support( $feature ) {
	global $_wp_post_type_features;

	$features   = ! is_array( $feature ) ? array( $feature => true ) : $feature;
	$post_types = array_keys(
		wp_filter_object_list( $_wp_post_type_features, $features )
	);

	return $post_types;
}

get-post-types-by-support-functionexample.php

<?php

// Example usages

// Get post types
get_post_types_by_support( 'editor');
/* Outputs
Array
(
    [0] => post
    [1] => page
    [2] => nav_menu_item
    [3] => custom_post_type1
    [4] => custom_post_type3
    [5] => custom_post_type4
    [6] => custom_post_type5
)
*/

get-post-types-by-supports-function.php

/**
 * Get a list of post types that support a specific feature.
 *
 * @author Travis Smith <t@wpsmith.net>
 * @author Micah Wood <@wpscholar>
 * 
 * @param string|array $feature String or array of post type supports (e.g., title, editor).
 *
 * @return array Array of post type names that support feature.
 */
function get_post_types_by_supports( $features, $operator = 'and' ) {
	$features = ! is_array( $features ) ? (array) $features : $features;
	$supports = array();

	if ( 'and' === strtolower( $operator ) ) {
		foreach ( $features as $feature ) {
			$supports[ $feature ] = true;
		}

		return get_post_types_by_support( $supports );
	} else {
		$post_types = array();
		foreach ( $features as $feature ) {
			$post_types = array_merge( $post_types, get_post_types_by_support( $feature ) );
		}

		return array_unique( $post_types );
	}

}

get-post-types-by-supports-functionexample.php

<?php
get_post_types_by_supports( array( 'genesis-entry-meta-before-content', 'genesis-layouts', ) );
/* Outputs
Array
(
    [0] => post
    [1] => custom_post_type1
    [2] => custom_post_type2
    [3] => custom_post_type3
)
*/
get_post_types_by_supports( array( 'genesis-entry-meta-before-content', 'genesis-layouts', ), 'or' );
/* Outputs
Array
(
    [0] => post
    [1] => attachment
    [2] => custom_post_type1
    [3] => custom_post_type2
    [4] => custom_post_type3
    [5] => custom_post_type4
    [6] => custom_post_type5
    [8] => page
)
*/