1. I think the only enemies in the game that can possibly be made submissive by topping them are: Harpy, Wereslut, Goblin, maybe Centaur. The rest of 40+ characters are having their way with you, or fighting intil they can't anymore.
2. I mean, Strange Merchant and Nurse are wearing dildos, so you can say they don't have a dick for certain. Angel, Brothel Madame, Vampire Helena, Alara have textual scenarios where you fuck their pussy. Shopkeep, well, you can see her underwear, and there's no mention of a bulge there. That's plenty of women. Out of three prostitutes only one is offering her dick, others are therefore don't have it.
3. As for Trudy, yeah, that's kind of cruel to him. But, on the other hand, he's a big slut, and there were no instance in the game where he didn't like being handled roughly. (He even had a different kind of cat take him.)
If you really want to see an actual non-consentual stuff, you can: meet the Orc once, don't rescue the traveller she is using, then meet her for the second time, fight, and lose. That scene really doesn't look even like a dubious consent.