FFG rates the crew of 'smaller raiders' at 10,000 iirc. Here I'll actually check....
Transport: ~20,000
Raiders: 22,000
Frigates: 30,000
Dauntless: 65,000
Lunar: 95,000
Wolfpack raider (basically an iconoclast): 18,000
Onslaught raider: Countless (that's orks for you....)
Firestorm: 25,000
Avenger: 120,000
Lathe-class: 52,000
Cobra class: 15,500
Q-ship: 18,000
Tyrant: 10000