Remove author name from RSS feed.

hide_the_author_rss.php

/**
 * Hide the author 
 *
 * Hide the post author on the standard RSS feed if it matches a preset value.
 *
 * @link https://capwebsolutions.com
 *
 * @package WordPress
 * @since 1.0.0
 * @license GNU General Public License 2.0+
 */
function cws_hide_the_author( $display_name ) {

	// $display_name === string $authordata->display_name
	// RSS xml format <dc:creator><![CDATA[Name 1]]></dc:creator>.

	$hide_authors = array( "Name 1", "Name 2" );
    if ( is_feed() && in_array( $display_name, $hide_authors ) ) {
        // return 'Our Guest Blogger Program';
        return ' ';
    }

    return $display_name;
}

add_filter( 'the_author', 'cws_hide_the_author', PHP_INT_MAX, 1 );