Litrpg, isekai, progression fantasy in general works there.
Romance and LGBT+ stories are starting to work there because of tons of migrants from Wattpad. Before, there was no way romance will work (devs even think it's a waste of time to put specific pairing tags), but now I've seen it's starting to take a foothold and will continue to do so in the future as more Wattpad people come, and RR people open up to it. There are tons of LGBT+ stories there, people usually don't mind nowadays, like having an LGBT+ character in a fantasy story is no big deal. It's the LGBT+ Romance story that might be harder to sell than straight romance.
Smut is against the site policy. Devs want to cater to general ads so can't have outright smut. I think people go by like 10% sex scene or something? You can have sex scenes, the story just can't be outright smut.
As for the readers reaction, yep it can be pretty brutal. This is speaking from someone who's writing a story that's not under the preferred mainstream genres of either SH or RR. SH readers pretty chill. RR readers can be really aggressive. BUT, RR is really the best place for feedback. While there are trolls there, there are also tons of people who want to help out. That's kind of the tradeoff. If you want peace and quiet, can just stay here in SH.
If you're writing the usual fantasy stuff, especially progression fantasy, then there's no issue. If you're writing something way different, be prepared for negative feedback. I've lived through it. But then again, I wrote in RR like six years ago when The Group was still around. For those not familiar, way back in the early days of RR, there were sanctioned groups that reviewed stories. Obviously, that gave rise to elitist pricks. That's actually why RR culture is like this. The brutality and toxicity in RR now is a tiny, tiny, tiny fraction of the past.
Can the "not usual stuff" work in RR? Yes. It's going to be very hard and painful journey, but it can.
