So, let's have a fun discussion about the top players in every game at this point.

HU NL

Isildur. He has huge swings, but he's destroyed some of the best NL players in the game. Even Antonius refuses to play him at NL, and that says a lot.
Ivey for obvious reasons
Kanu7 has been doing very well lately
Sauce

Cates

6max NL
Isildur again
Ike Haxton
Trueteller/Denoking/Human

PLO
Phil Galfond
Patrik Antonius
Ivey

The elite pros at RIO
Brian Hastings
Isildur

I haven't railed high stakes in a while, and I'm curious about who the top players are, right now.
Let's fill out a list with more players, games, and please specify why you think a certain player deserves the spot.