Team West:
くまちょむ Kumachom - one of the most respected, top Puyo players for the past two decades
HBM - hebo_MAI, the top ranked Tetris player in the world (also becoming really good at Puyo)
Team East:
Tom - another top Puyo player. Streams somewhat frequently on Twitch. Likes teaching newbies and foreigners.
あめみやたいよう amemiya - a prodigy who only started learning Tetris two years ago(?) when Puyo Tet came out
Have enjoyed the Japanese version tremendously. It's probably the best game of the generation. I would double dip and buy an English version if it was to be realized.