Minimum thread count while still having a rug!

Krea2:
It's a pretty flexible lora. NSFW lora's can help, but not always necessary.

Flux:
It will require either a checkpoint with nudity unlocked or a NSFW LoRA to go along with the normal Flux Dev model. In my tests, for most models, I found 0.25 - 0.50 strength gave the best results. The comparison image included in the example gens shows examples of what strength you'll want to aim for with your chosen model.