I know a good one I found was Operation Harsh Doorstop, which is a fantastic AA game made by Drakeling Labs (owned by Connor “Bluedrake42” Hill). I hadn’t played it in a while though. An open-source option is Unvanquished, which is not a movement shooter, but I think is based upon Quake 3 with the Daemon engine. That’s what I found, though.
It’s been like that since MW 2019. BO7, however, is just BO6 Pt. 2 (according to Fooly).