Pre-bank, only legal Knock Off users now is Machamp, Alakazam A-Muk, Hariyama, and Sableye. Archeops, Carracosta, Mandibuzz, Salazzle, Pelipper, and Ledian also added to list once bank releases (assuming Alola dex only can only participate). Even without Knock Off Mandibuzz can do decently well...