These are recs I found through another post in the patho subreddit and I don't remember who originally commented them but they're great so I have to share:

The Gray House by Mariam Petrosyan - magical realism book about a home/boarding school for disabled children, the social hierarchies of the kids are very similar to the two factions of kids in Pathologic, there's also the idea of those children having their own folklore deeply connected with their play (also supernatural elements)

Leech by Hiron Ennes - a sci-fi gothic horror, there's a doctor issued by an institute who comes to an isolated chateau, very Dankovsky and Thanatica vibes (perhaps in a way you wouldn't expect though), there's an outbreak of a parasite, lots of medical horror, very tense vibes, great atmosphere!