check this
$orderby
(string) (optional) Set the field used to sort comments.
Default: comment_date_gmt
$order
(string) (optional) How to sort $orderby. Valid values:
'ASC' - Ascending (lowest to highest).
'DESC' - Descending (highest to lowest).
Default: DESC
you can choose every fild in the database->wp_comments table structure as the $orderby parameter. but this would generate a array with all comments so you have to filter them checking the post_ID === $page_id (get_the_ID()) or you build your own sql statemant to get your custom array.