html for custom sorted - indexed - list of postmeta that was a serialized json object to start.

custom-page-template.php

<?php
/* 
* Template Name: Custom List Page
*/
get_header();
$post_id  = get_the_ID();
$meta_list = Sort_The_List::get_postmeta_from_db( $post_id );
if ( empty( $meta_list ) ) {
	return;
}
?>
<section class="item-list">
  <div class="item-list-wrapper">
    <div class="items-table">
      <table class="item-in-list">
        <tbody>
          <?php
          foreach ( $meta_list as $key => $value ) {
            printf( '<tr><th scope="row">%s</th><td>%s</td></tr>', $key, $value );
          }
          ?>
        </tbody>
      </table>
    </div>
  </div>
</section>
<?php
get_sidebar();
get_footer();