Having seen many things on the internet I wish I hadn’t, I think there are actually 12 holes. Roughly working top down:

• 2x: gore
• 2x: slightly more socially acceptable gore (especially on non-humans)
• 2x: that’s just weird but not gore I guess
• 1x: mainstream porn
• 2x: I don’t think these work like fetishists think they work
• 1x: this definitely doesn’t work the way fetishists think it works
• 1x: probably uncomfortable, also why?
• (1x: not guaranteed to exist on everyone but the most “vanilla” of all the holes)
• 1x: probably ouch but some people are into that ig