Split List by Post Type

I used a code from before to display my favorites.

I replaced:

query_posts(array('post__in' => $favorite_post_ids, 'posts_per_page'=> $post_per_page, 'orderby' => 'post__in', 'paged' => $page));
while ( have_posts() ) : the_post();
   echo "<li><a href='".get_permalink()."' title='". get_the_title() ."'>" . get_the_title() . "</a> ";
   wpfp_remove_favorite_link(get_the_ID());
   echo "</li>";
endwhile;

With:

foreach ($favorite_post_ids as $post_id) {
    $p = get_post($post_id);
    echo "<li>";
    echo "<a href='".get_permalink($post_id)."' title='". $p->post_title ."'>" . $p->post_title . "</a> ";
    wpfp_remove_favorite_link($post_id);
    echo "</li>";
}

But my question is, I want to separate the lists by different Custom Post Types…so how can I make this code only show favorites from one specific post type.

Then I figure I would duplicate it over again for the other Custom Post Types.

https://wordpress.org/plugins/wp-favorite-posts/