No real preference, just need to be "good", which is more then a vibe chek then anything else.
As for reccomendations:
3D (realstic): Family Faring, Having a HARD time (futa protag), Light of my Life
3D (Anime): Harem Hotel, Waifu Academy
2D (Anime): Benefitship, Futa Fix Dine and Dash (both Futa Protag)
2D (non-anime): Lewdest House, Bad Girl Gone Bad (art is very inconssitent, but its pretty well written)
Don't think all of these games are on here though.
if I'm looking for a more tame or reasonable story, then I'm looking for the more realistic 3d style; if I want something more wacky or whimsical, then I'm searching for something anime/drawn or the sorts.
Realistic art would be the ideal, not nasty realistic of course, more Instagram/ movie realistic.
Though this isn't something I would ask for since I feel like the game will never end or updates are going to be 2 years apart for ten minutes of content.
other than that, I think as long as effort and passion is put into the art it generally end up looking good, doesn't matter if its 2D, 3D or stop motion( haven't seen any but it would be interesting.)
I prefer a stylised drawn style, but as long as it looks good I'm open to anything, even Koikatsu games can look good if a dev actually puts effort into camera angles and lighting
It all depends on the game. There's some really good pixel/voxel art which works well in frame by frame animation. A lot of the time, Live2D animation feels kind of floaty, so I prefer frame by frame. If the game is based on existing work, I prefer it to look similar enough to the original. I also like cell shading, with a little bit of soft shading on top for highlights.
Realistic, though I don't mind other styles. It's the hardest to do well, but games that put that effort in look fantastic. I've played plenty of games in the Koikatsu engine but I've never had one stand out as looking great, generally they look at best good and then go downhill from there.
If it's realistic... it's too real Depends really, but I prefer 3D at max for most of my games. I need a degree of separation else it becomes a fetish in my mind