List by sharecount for custom post type

Okay, so I am so damn close but can’t seem to cross the finish line on my own.

Here’s what I’ve got.

<?php
			$count = 1;

			$mostsharedposts= new WP_Query(
				array(
					'posts_per_page' => -1,
					'post_type' => 'reviewer',
					'meta_key' => 'mashsb_shares',
					'orderby' => 'meta_value',
					'order' => 'DESC'
				)
			);

			while ( $mostsharedposts->have_posts() ) : $mostsharedposts->the_post();
			$sharecount_totals = get_post_meta( get_the_ID(), 'mashsb_shares', true );
		    ?>

Then it lists all my custom posts, but does not order them by the meta key. A bonus, I figured out how to echo the sharecount totals as plaintext for the sake of a huge list of names.

Any thoughts?

https://wordpress.org/plugins/mashsharer/