wp_list_authors(), displays a list of the sites’s authors (users), and if the user has authored any posts, the author name is displayed as a link to their posts.
Use
$authors = get_users( [ 'role__in' => [ 'auther'] ],
// add other parameters
);
Then loop through $authors to create your own list.
foreach ( $authors as $author ) {
// your list goes here
}
I hope this helps to start.