The Bronx look amazing, definitely the best one of the bunch. And I definitely gotta root for them.
Staten Island has a cool logo, I have the same question about the jerseys.
The Riders are simple, maybe too simple, but it works for the era I think. Doesn't make me think of Boston though.
I really like Hempstead. Nice color of blue and the logo is clever and feels lifted from that era.
Panthers. I like the panther a lot. I don't like the roundel or the way the text is positioned. The lightning bolt and extra box seems super arbitrary and unnecessary IMO. I think you could put that into the black half circle underneath the panther. The black and purple clash too much, I think you'd have to go with like a lighter plum color or something. Looking at them, I feel like this was the team that should have been black and white. I'm only harping on this one because I see so much potential with it.
I like the NY monogram, feels era appropriate, and the two-tone blue scheme.
Nice work overall, looking forward to the first season!