actual sex (of any kind), some other overly sexual things and sexual bodily fluids are to be censored (if not, you can get banned/reported) and artists usually post the NSFW art on other sites like Tumblr. So maybe try going to said artists' pages and look for other possible sites they may use. Most artists post them in their ID information.the mature content mostly allows violence (blood, gore, triggering situations) and nudity (erections/'gaping' holes/spreading of anus or vagina are excluded from the nudity bit, those also need a censor of some sort)/sexual themes but it does not allow full on porn.If you want more information try finding the guidelines/rules or look here: NSFW Content And Censoring It (most of what i said comes from the information given here)