From video gaming to card games and stuff in between, if it's gaming you can probably discuss it here!
See also Gaming's sister community Tabletop Gaming.
This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.
Gaming is a pretty broad topic, so I'll give a range of answers that are gaming related but not necessarily strictly gameplay.
Summoning Salt - Speedrun Historian
8-Bit Music Theory - Video Game Music Theory
Game Maker's Toolkit - Video Game Design Theory
Jacob Geller - Video Essayist with focus on Games
DougDoug - Community Influenced Gameplay with Light Coding (also hilarious)
But that's my selection.
Skillup is a great channel for reviews and news. Lately I've been enjoying FLEEKAZOID for humorous and edgy content, sometimes it's nice to not take something so seriously.
Kripparrian. Because he plays the same games as I do and because he is vegan :-). I like him a lot.
If you like horror games Insym.
Interested in learning about some of these creators bc I only really watch Dunkey anymore. That little imp has really matured in terms of the kind of content he produces. He's insightful and he cracks me up.
Colonel Failure is great! He doesn't take himself too serious which leads to great video
Glad to see Grim Beard getting love online. Love his stuff. Civvie is also top notch.
Let's Game it Out
Soursweet
Fooster
Anarchy
There are a few more I watch sporadically but these are the main ones