All.
Maybe I would watch out with sleeping with a male 4 because they can be really sensitive and whiny after. I have one male 4 friend and I imagine him going like (after) "so is that all I was/am to you? just a one-time hook-up?".
And a 5 would probably be the worst with how out of touch with their sensuality they often are. So I find that an odd choice for fwb.