Any legit TS providers in Providence, Warwick or Boston. I see the same ones popping up on Boston Eros but they always seem to be fakes. I know TS Isabella is legit but any others. Amazing how many fakes there are.

There are a ton of fakes but also a lot of legitimate providers out there too. I'm not going to link to all of them but names that I know are real and most have multiple reviews currently on Eros include:

Ts Lavinia Brazil
Ts Angel
Ts Brittney
Ts Feona

There are others as well.

Depends on your taste.
All four mentioned are good. Stay away from Backpage though. Too many fakes.