wc_get_products_bu_category_id.php

<?php

/**
  * Gets all products by category ID
  * Original source: https://wordpress.stackexchange.com/questions/143582/get-the-product-list-of-a-given-category-id
  */
  <ul class="relatedlinks">
    <?php
      $args = [
        'post_type' => 'product',
        'posts_per_page' => -1,
        'post_status' => 'publish',
        'tax_query' => [
          [
            'taxonomy' => 'product_cat',
            'terms' => $product_category_id
          ]
        ]
      ];

      $related_products = new WP_Query($args);

      if ($related_products) {
        while ($related_products->have_posts()):
          $related_products->the_post();
          ?>

          <li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>

        <?php
        endwhile;
        wp_reset_postdata();
      }
    ?>
  </ul>