Redwizard007
Adventurer
Their early stuff was pretty good. I haven't been impressed for a while, but for a new 5e player it is easily worth the watch.
My favorite "DM tips" YouTube content creators are Matt Colville, Professor Dungeon Master, Taking 20, and Jim Murphy. I've also been watching a lot of Old School Gaming history videos just to learn more about classic adventures and settings (especially Mystara) [Captain Corajus, Mr. Welch]. The Dungeon Dudes and Nerdarchy - for some reason - just don't connect with me.