Custom Post Repeater in New Field

Wanted to create a custom post repeater by extending the select field.

I've created a new field & added some custom

if ( class_exists( 'RWMB_Field' ) )
{
    class RWMB_Glossary extends RWMB_Field
    {
    	/**
		 * Get field HTML
		 *
		 * @param mixed $meta
		 * @param array $field
		 *
		 * @return string
		 */
		static public function html( $meta, $field )
		{
			/*
			$my_meta = get_post_meta( $post->ID, 'my_meta_name', true )
			if( !empty( $my_meta ) ){
			    foreach( $my_meta as $entry ){       
			        $post_id = $entry['custom_post'];
			        $my_post = get_post( $post_id );
			        $c_title = $my_post->post_title
			        echo "'".$c_title."' => '".$c_title."', " ;
			    }
			}
			*/
		}

	
    }
}

Any idea how I can output a list of my custom post types here?

*I actually have the core extensions with me but i'm not sure which works best in this case.