Gist for my article WordPress: Access post meta fields through WP_Post. https://vanaf1979.nl/wordpress-access-post-meta-fields-through-wp-post/

other_values_on_wp_post.php

<?php

echo $post->page_template; // The page template for this post.

print_r( $post->post_category ); // Categories associated with this post.

print_r( $post->tags_input ); // Terms associated with this post.

print_r( $post->ancestors ); // Ancestors for this this post.

?>