Patreon doesn't allow rape, and other platforms have rules against it too. If you use real porn for images, Patreon doesn't allow that either but some devs still get away with it. They would close your account for that if they find out. You'll have to keep it out of the base game and "someone" has to release a "third party mod" for your game with the banned content if you go with Patreon. And you shouldn't refer to that "third party mod" as yours on other sites than Patreon either, they snoop around.
SubscribeStar supposedly responds quicker if you have a Patreon, linked social media accounts and send them a mail about speeding up your application.