Lynx is a reddish purple and Corvus is gray. I get along fairly well with the members of both teams I've met, but they mostly keep to themselves. They're the newest teams to show up, and they're sometimes a bit edgy.
Monoceros and Lepus are white and brown. Monoceros are decent people; we used to be pretty close to them, but that's faded a bit. Lepus is...complicated. They've got some good people and some who are pretty crazy. The most dangerous of those just left, but watch out for a girl named Mikaila; you'll know her by the condescension, entitlement issues and conviction that everyone's going to hurt her so it's all right to hurt them first.
Pavo and Delphinus are light purple and light blue. We don't have a lot of contact with Pavo, in general; they've got an incredible artificer, though, Feathers. Delphinus...well, they're split on us. You've met Ed, and he's one of the closest friends I've got. Link's a good man, too. Some of the rest aren't fond of us; there's some ugly history there between us, but I'd rather you judge them on their own merits than on what happened in the past. Just be aware that you might not get a completely friendly reaction.
The last pair are Hydra and Vulpecula; light green and orange. Vulpecula's leader is sort of insane and holds grudges forever, so you probably want to avoid her. The rest of them are probably all right if you approach them carefully, especially Kaito. Be on your guard, but they'll probably play nice if you do.
Hydra...well, their leader, Scowl, hates my guts, and he does his best to make sure everyone else on the team thinks of us as an enemy. Doesn't always work, but don't expect a friendly reception; it's probably best to just avoid them unless they approach you, if possible. You'll know if Scowl's around by the shouting; he's in a relationship with someone on Lacerta, so he shows up around there every so often, but mostly we try to stay out of each others' way. If you find a guy named Simba, though, he's all right -- assuming that his teammates don't stop him from talking to you because you wear our colors.