I feel like Finn is the cutest version on Slytherin

Like he wants to save himself until he finds a Bigger Cause and Friends worth fighting for

And Rey is a hufflepuff

And Poe is gryff

I was going to dispute some of these but I thought about it longer and you're probably right

I think Finn could be argued as Huff too

Since he wouldnt do anything alone

That's also true. But my reasoning for Slytherin was that they are also very loyal...but only to people who earn their trust.

Like they are not so easily persuaded to put themselves in harm's way for a cause unless they are protecting their pack or really REALLY believe in the cause

At which point anyone who stands in their way better take several steps back.