SD 1.5 was not censored. Later version were trained with the the censored data. A side of that was bad anatomy. Search for stable diffusion woman lying on grass. I think this was SD3. It generates monstrosities when you ask for a woman on grass.

I liked ideogram's approach. It looked like their training data was not censored as much (it still didn't render privates). The generated images are checked are tested for nudity before presenting to user, if found, image is replaced by a placeholder.

If you check SD reddit, community seems to have jumped ship to flux. It has great prompt adherence. You don't have to employ silly tricks to get what you want. Ideogram also has amazing prompt adherence.

We did have SDXL in-between, and while that one was also censored, the censoring has been long since removed in fine-tunes.

Flux is also censored, but in a way that doesn't usually break anatomy. It took about a week before people figured out how to start decensoring it.