For friends I think Muninn, seraph or/and Leto would be good choices. muninn s a little weird himself and talks in the polite third person. He's also a bit self conscious of his mutations but he has absolutely no problems with being a hybrid. Since he's a geist/ Fallen hybrid he also understands being made up from two species that normally wouldn't exactly end up together.
Seraph on the other hand is extremely friendly, very sure of of themselves and a bit outgoing. They're also filthy rich do to their parents being famous singers. He also has a large group of friends, with a good chunk of them being hybirds as well.
Leto i think would make a good room mate. He's a litch/fallen so he's rather quiet and bookish themselves as they want to grow up to be an archaeologist. He's also super friendly and polite to the extreme. He does get sick a lot though as a freshling so he does have small confidence issues due to that. Leto would also be a way to learn how to fly since his mom is Nasai, who is a fully grown Fallen.
Arinas might work well for the cooking hobby one. He's a Litch/fallen/geist hybrd that really loves baking and he's rather nice natured and quiet. However since he has litch blood he got saddled with really numb taste buds so he isnt able to taste too well. His dad is studying to be an astronomer so he's also always reading different space books.
(i could probably add more but four is a good starting point)