Display all authors in a theme template

What you need here is to shuffle all the array elements & then display them. But since php’s shuffle() function doesn’t preserve array key associations, here’s a version that does.

function shuffle_assoc(&$array) {
    $keys = array_keys($array);
    shuffle($keys);
    foreach($keys as $key) {
        $new[(string)$key] = $array[$key];
    }
    $array = $new;
    return true;
}

Add this function somewhere in your functions.php & replace arsort($authorsArray); with shuffle_assoc($authorsArray); in the code suggested in the previous question