[[oneLatestResByParent]]
<?php
if (!function_exists('show_latest')) {
function show_latest() {
  global $modx;
    $output = '';
    $table = $modx->getFullTableName('site_content');
  $result = $modx->db->select('id, parent', $table, '(parent=61 OR parent=63 OR parent=64) AND deleted=0 AND published=1', 'pub_date ASC, createdon ASC', '');
  $members = $modx->db->makeArray( $result );
  $struct = [];
    foreach( $members as $p_val ) {
    $struct[$p_val['parent']] = $p_val['id'];
    }
  return implode(',', $struct);
}
}
return show_latest();

tplHomePage
[[DocLister? 
&sortType=`doclist`
&documents=`[[oneLatestResByParent]]`
&tvPrefix=``