SQL User Query by Multiple Roles using PHP

Taking @Kaperto’s advice, I did the following which works:

$user_query = new WP_User_Query( array(
    'role__in'    => ['role1','role2''],
    'orderby' => 'meta_value_num',
    'order' => 'ASC',
) );   
$users = $user_query->get_results();