>>3940161Gryffindor/Hufflepuff Jayce and Ravenclaw Viktor. I'm not so well-versed on Hogwarts houses so this is just a random string of words that come to my head.
I know some people place Jayce in Ravenclaw as well, but I don't really see it for him. He's as scientifically-minded as Viktor, of course, but I think he's more easily led astray from it, which was the conflict in his character in S1 where he got lost in politics, in contrast to Viktor who will (for the most part) stop at nothing when it comes to innovation as we can see with his self-experimentation and hiveminding of everyone. They both set aside their ideals at some point, but in my mind Jayce's was borne of an external influence while Viktor came to that conclusion on his own.
I opt for Gryffindor simply because of its overall archetype of being brave and sort of reckless, and their naivety due to being tunnel-visioned in their chivalry sometimes. Don't really have an argument for Hufflepuff, more of an alternative.
Other characters:
Vi: Gryffindor
Caitlyn: Not Ravenclaw
Jinx: Slytherin?
Ekko: Gryffindor/Hufflepuff
Mel: Slytherin
Silco: Slytherin
Vander: Gryffindor