bp_get_member_type_by_wp_role( $role )

function bp_get_member_type_by_wp_role($role){
	$bp_member_type_ids = array();
	$post_type = bp_get_member_type_post_type();

	$bp_member_type_args = array(
		'post_type' => $post_type,
		'nopaging' => true,
	);

	$bp_member_type_query = new WP_Query($bp_member_type_args);
	if ($bp_member_type_query->have_posts()):
		while ($bp_member_type_query->have_posts()):
			$bp_member_type_query->the_post();

			$post_id = get_the_ID();
			$selected_roles = get_post_meta( $post_id, '_bp_member_type_wp_roles', true );
			$selected_roles = (array) $selected_roles;
			$singular_name = strtolower(get_post_meta( $post_id, '_bp_member_type_label_singular_name', true ));
			$name = bp_get_member_type_key( $post_id );
			if( in_array($role, $selected_roles) ){
				$bp_member_type_ids[] = array(
					'ID' => $post_id,
					'name' => $name,
					'nice_name' => $singular_name,
				);
			}
		endwhile;
	endif;
	wp_reset_query();
	wp_reset_postdata();
	return $bp_member_type_ids;
}