Best at every agent NA teams only

Probably fair but I see Xeppaa's Skye as the rock of C9 and he's played it so much more than Leaf, and anyone for that matter, that I think he's overall the most skilled at the specific agent. His assist numbers and KAST are still higher than Leaf but Leaf's fragging on the agent is crazy

Cypher is by far the weakest agent in NA franchising, I'd likely take the two you mentioned alongside poised, add3r, and moose on cypher instead of Stellar but he's the only one that plays it at all, and is probably the historically best between he, fns, and dephh.

The other half is south NA

All the good sentis are in Challengers because franchised teams went for chamber players or the sentinel players are igls

NA teams prioritize flexing KJ a lot more than most other regions, NRG has had 4 different guys play 100 rounds of it alone, and C9 and 100T each have two different guys that play it depending on map and meta. EG and SEN are the only ones who stick to a strict singular KJ and SEN specifically plays it a lot less than your average team. If this was something like EU you could just say Alfa since it's really all he has to play RN, but in NA your best KJ players are also best in class phoenix, raze, and kayo guys.

That's why I specified it was NA teams only and not NA players only. Either way it only changes up Fade and Sage which would just be Derrek and Cyro