You can write your own custom HTML structure for comment listing. Inside your comments.php
file, there will be a call to wp_list_comments()
function. Find it, and pass your own function as its callback:
wp_list_comments( array( 'callback' => 'my_function' ) );
Now, create a callback function and start implementing your own HTML structure. This function accepts 3 arguments. Here is a basic example:
my_function( $comment, $args, $depth ){
$GLOBALS['comment'] = $comment;
// You have access to comment's ID and other
// comment query methods here, such as comment_ID();
}