ildi-wp/home-loop.php

<div class="grid xs-col-100 sm-col-50 md-col-33 grid-gutter-lg">
<?php

  $homeList = wp_get_nav_menu_items('homepage-list');

  if($homeList){
    foreach($homeList as $item){
      $post = get_post($item->object_id);

      ?><section class="home-loop">
          <a href="<?php echo get_page_link($post); ?>">
            <h1><?php echo($post->post_title); ?></h1>
            <?php echo(get_the_post_thumbnail($post)); ?>
          </a>
      </section><?php
    }

  } else {

    $sticky = get_option( 'sticky_posts' );
    $args = array(
      'posts_per_page' => 12,
      'post__in'  => $sticky,
      'ignore_sticky_posts' => 1
    );
    $query = new WP_Query( $args );

    if ( isset($sticky[0]) && $query->have_posts() ) {
      while ( $query->have_posts() ) {
        $query->the_post(); ?>

        <section class="home-loop">
          <a href="<?php echo get_page_link(); ?>"><?php
            the_title( '<h1>', '</h1>' );
            the_post_thumbnail();
          ?></a>
        </section>

      <?php }
    }

    wp_reset_postdata();
  }
?>
</div>