The code below will display posts from different post types in single WordPress loop.

Just replace the post types I placed with your own defined post types.

Of course you can add more WP_Query arguments to customize your query.

<?php
	$args = array(
		'post_type' => array('tutorial', 'post'), //replace this with your post types
		'orderby' => 'date',
		'order' => 'DESC',
		'posts_per_page' => -1
	);
	$wpQuery = new WP_Query($args);
	if($wpQuery->have_posts()) : ?>
		<ul>
			<?php while($wpQuery->have_posts()) : $wpQuery->the_post(); ?>
				<li>
					<h2><?php the_title(); ?></h2>
					<p><?php the_excerpt(); ?></p>
				</li>
			<?php endwhile; wp_reset_postdata(); ?>
		</ul>
<?php endif; ?>