Full table of B71 phones: http://band71.batcave.net/
The T-Mobile REVVLRY is a T-Mobile branded Moto G7 Play, but with 3GB ram. You can buy this unlocked for the same price ($200) but it has less RAM. Up to 2xCA.
The T-Mobile REVVLRY+ is a T-Mobile branded Moto G7 Plus. There is no other B71 equipped G7 Plus. Up to 3xCA.
The “Moto G7” is the only G7 phone without Band 71 on any variant.
For a spec comparison of all Moto G7’s you can reference the table here: https://www.androidcentral.com/moto-g7-specs
T-Mobile press release: https://www.t-mobile.com/news/revvlry-smartphone