Arkathan
Emperor Mongoose
Follow up here, the official designs often use Cabin Space instead of Staterooms for crew spaces. So why doesn't cabin space count towards crew? The rules in High Guard only explicitly exclude Acceleration seats and benches and low berths. Cabin Space, unlike acceleration seats and benches, includes a life support cost and while the description says 'usually' only used for short trips but doesn't exclude long term use as it's explicitly mentioned it's for use in longer interplanetary distances.
Been a while, let me check on that and come back to it.