[LanceH]

chessnetwork (a Canadian National Master's name on twitch) is a warm and welcoming streamer as well.

[kohtatsu]

Seconded. Jerry makes thorough yet cosy and approachable content.

Edit: he also covers engines which I find pretty interesting, a lot of Leela but my favourite so far is this game with AlphaZero and Stockfish: https://www.youtube.com/watch?v=2m5oXlZ_e_A