Oceanliner Designs - lots of interesting videos about titanic & other ships of that era.

Caitlin Doughty/ask a mortician - lots of cool video essays about death

B1M - lots of cool engineering related videos

Evan & Katelyn - lots of cool resin creations.. gives me cooking channel vibes where after watching a video, i have an intense urge to make things i dont need.

Well Theres Your Problem - a podcast about engineering disasters… with slides

Tasting History with Max Miller - a cooking channel that is also a history lesson.. super cool

In addition, just a bunch of urban planning youtube (city beautiful/city nerd/oh the urbanity, etc) & video game content