Discussion at Reddit
I'm sure you've heard of most of the players but the one player that I never noticed before was Dubby. He explains his thought process of orb matching in English and he actually visualises the final board each time before solving which is really impressive to me! The discussion includes a lot of well-known YouTube channels for PAD but definitely check out Dubby if you haven't before.
Edit: Here's Reco's Twitch page for those interested. His streams are in Chinese.
