I don't want to break the rules, so will just say a character from Madoka Magica. Which gives you an idea of how long ago this was.
It was a private commission, that was kind of the point. (I mean maybe she uploaded it after, but she'd've had to cut the parts where she was thanking me etc. by name.. Unless some people are into that?).
If you mean more generally, I wouldn't recommend the specific person I got it from (for essentially all the reasons that artists are bad: delays, poor communication, not delivering the last part because she'd apparently got too fat), but these days there's plenty of options (and at more reasonable prices). Look up some costhots on Onlyfans/Fansly and half of them will be offering custom content, and I bet most of the others would do it if you DMed them and offered.
I know what I like and was able to get something I enjoyed, shrug. If anything I find it more baffling that people will sponsor someone's cosplay when they're not getting porn of it in return, or pay for non-nude cosplay pics.
When I say "porn" there were no men onscreen, to be clear.