Asking to check whether the extreme content mod has gore and necrophilia and stuff like that cuz that's one hell of a turn off for me(p.s this is not an attack on those who likes those things , you do you )
The closest thing to necrophilia is that I believe you gain the option to kill slaves and turn them zombies eventually, but I've never actually tried that so I'm not sure how it goes exactly.
There's definitely gore, but it's "mostly" avoidable, in that you can usually tell when an option is going to lead to gore. There are a couple of events that spring it on you out of the blue, but only one or two that I can remember, and even those have an "extreme gore" warning I believe. Aside from anything to do with Fei and the Piaoliao Nuli. I would avoid them entirely if you want to avoid gore.
That said, I'm definitely not into gore and I still love the game with the extreme content mod, so you can definitely work around it. Even the monster arena fights are more just, there was a slave there and now there's not, rather than any actual gore.
Pretty much, to be safe, avoid anything that says, "Have some fun" because it's not our kind of fun.