I have TAXONOMY A and TAXONOMY B (used with Pages and 2 custom post types). I need the taxonomy.php template used by TAX A to filter by the terms of TAX B. What’s worse, I need to be able to use an existing custom meta value for each of those TAX B terms to dictate the order (clients, amirite?).

I have something kinda similar for a regular post type loop (posted below, FWIW), but can’t get anything working how I need it for an archive function. Any ideas welcome.

<?php $custom_terms = get_terms('CUSTOM_TAX_1');
foreach($custom_terms as $custom_term) {
    wp_reset_query();
    $customQuery = array(
        'post_type' => 'any',
        'order' => 'ASC',
        'orderby' => 'menu_order',
        'tax_query' => array(
            array(
                'taxonomy' => 'CUSTOM_TAX_1',
                'field' => 'slug',
                'terms' => $custom_term->slug,
            ),
        ),
     );

     $custom = new WP_Query($customQuery); ?>
     <?php if($custom->have_posts()) {
        echo '<h6>'.$custom_term->title.'</h6><section>';
        while($custom->have_posts()) : $custom->the_post();?>
        
        <div class="entry">
            <h4><?php the_title(); ?></h4>
            <?php the_excerpt(); ?>
        </div>
        
      <?php endwhile; ?>
      
  </section>
  
     <?php }
}
?>

<?php wp_reset_query(); ?>