theme development - How can I exclude specific authors from wp_list_authors in WordPress

wp_list_authors() w does have an exclude parameter. So you can exclude the authors you want by their user ID.

It accepts:

An array, comma-, or space-separated list of author IDs to include. Default empty.

Examples:

// exclude just the author with the ID 4
wp_list_authors([ 'exclude' =>
 4 ]);
// exclude the authors with the IDs 4 and 7
wp_list_authors([ 'exclude' =>
 [ 4, 7 ] ]);
// or
wp_list_authors([ 'exclude' =>
 '4, 7' ]);