well idk what you mean by "similar" to Kaze to Ki no Uta anon, do you mean its aesthetic qualities, its tragic character, what? If you are looking for some high-minded, tragic yuri, look up anything from the primeval yuri ooze of more explicit Class S tragedies from the 70s, like Shiroi Heya no Futari by Ryoko Yamagishi. If you mean its high minded aestheticism, check out Paros no Ken from 1986 by Kaoru Kurimoto (yes, the Guin saga lady). If you refer to its erotic side (for many people seem to miss the erotic element of Kaze to Ki even though it's so overt), Ryouko Yamagishi has a lot of yuri one shots which I think are a sort of "female equivalent" to a lot of what happens in Kaze to Ki, like the Hatsheput one shots or the Medusa oneshot. But these are all short, and if you want a yuri manga of that epic scope, with that beautiful an artstyle, with that engaging a romance, then I can give you no directions besides maybe to dig through the Lillylicious scan archive lmao.

I will be honest anon, my favorite yuri, short of Utena which imo is less yuri and more Class S than anything, are mostly weird manwha webtoons that happened to grab my attention with how incredibly unorthodox and freaky they got with the usual schoolgirl bullying Oneesama E premise, like White Angels Have No Wings. I could argue it shares a kinship with Kaze to Ki certainly - themes of bullying, a catholic school setting, etc - but it is subjective enough that it's up to you to make that call. It's my favorite yuri though. Other yuri I like is just really raw disgusting shit honestly, like Murcielago or Kill Me Now, which I would not at all compare with Kaze to Ki.