... Ren[X] has literally been run by one or two clans after the first few years.
Old Ren had Jelly/RC and now RC/MPF mostly from what I see.
RenX had EKT before they died off of every game and became a Mine craft clan. They had TMX right beside them, till TMX dissolved.
CT isn't even a clan. It was purposely made to not be. It's just the remnants TMX, and then whoever else wants to play together. It just happened to get bigger than expected because @DoctorB0NG went 3 kinds of insane with building a community, and fighting the good fight in the great DDOS blizzard of 2016 (of which is still a problem, just ask BHC, and probably a lot of server owners.)
Also, all the mutators CT runs, that I know of, are posted publicly, like the player count modifier.
Cant speak anything on ping, as it's 300+ no matter what server for me, sans the Chinese one.