Slytherin, although I obviously over-ambitiously started the Slytherin group here. I think Ravenclaw would also be OK since the riddles and such sound fun, but I wouldn't even vaguely fit into a house full of Weasleys or a house known for being doormats (or, less commonly, the positive version of doormats). I also think Slytherin + Ravenclaw and Gryffindor + Hufflepuff are the canon alliances, basically dark and mysterious vs. open and warm, but during the books everyone gets ticked off at Slytherin for being Voldemort and Malfoy (vs. during other times when it has people like Merlin in it).
I don't know about Chae, but I like it whenever anyone says they're a Hufflepuff because it's considered the most irrelevant and pathetic house in the books but people are like "I don't care, I like what it stands for and think it sounds like fun". It's similar to people typing into Slytherin, which everyone thinks is just evil and bullies or something even though according to lore it's not (although most bullies get put into Slytherin or Gryffindor, and Gryffindor is depicted through rose-tinted glasses in the books even with actual depictions of all the things they did
). Gryffindor and Slytherin legitimately both come off rather Dark Triad-ish to me, Gryffindor like more of a psychopathic impulsive "let's have fun, screw everyone else" and Slytherin like Machiavellian businesslords and politicians. Then Ravenclaw is schizoidly withdrawn and just doesn't care about anyone while they're in their heads with their knowledge, and
all of the actually "warm" people are grouped together in Hufflepuff. JK Rowling picked a rather weird way to divide people up, even if they are wizards...
Also, can I get sorted into Durmstrang and Beaux Batons instead of the Hogwarts-pastiche cultural appropriation houses already? That would be cool, since those were
actually in the books when I read them, and I get tired of Anglophone everything. But no, I'm supposed to relate more to cultural appropriation than Germans or French because JK Rowling is a Brit and they're generally paranoid about Continental Europeans or something in ways Americans aren't...