I’m more likely to get into a relationship with the ex-stripper than the others. I have no problems with the prostitute/stripper/porn star because all of those occupations serve to monetize their bodies, so why get trip over how someone gets their grind on. The mega slut, however: I’d stay away from her solely because she is the one of the aftermentioned four that has the highest chance of having an STD.
In a STD free world, I’d go for the pornstar. I know right off the bat what the skillset is and you threw in personality as a bonus (which also means she wouldn’t refuse to do the things I like in bed from said skillset). I don’t have to screen for that, so it’s hard to go wrong here other than the reality of not being STD free despite the regular checkups.