I've been in NYC since the 90's. I've certainly heard of the East and West Side clubsbut from everything I've been told the rest of the sex clubs all closed in the 80s. before I arrived.
You've named a bunch of locations, but haven't named the venue.
I am not expert but I have sniffed around for action more than once, and I've never heard of any additional bath houses. Not since the Continental (that's the 72/Bwy you mention) closed decades ago ( when I was a child ) The Flushing and Roosevelt locations may be indicating the Korean Spas, not gay saunas. As far as Times Square, and Harlem, I have no idea what you're referring to.