What game variations are on that playlist?
Team Fiesta, Dino Blasters are the ones I have encountered in Reach. And in H2A Team Fiesta, Kill from the Hill, Gungoose CTF. There are probably more game modes that others have played.
For Reach, there’s also Hockey and Boom Ball, but thus far i’ve only encountered the latter in FFA Action Sack. I’d assume there’s a 4v4 variant as well, if I remember correctly there was one in the original Reach’s Action Sack.