If you wanna learn from the best chef in the world:

You Suck At Cooking! Yeah, you totally suck!

Or Preppy Kitchen if we're being serious

Legal stuff:

Meidas Touch and Legal Eagle

Retro video and music devices:

Techmoan and VWestlife

Also: Tom Scott. Or at least his backlog because he retired.

And a very important one! - Science stuff: Potholer54 I can't believe he doesn't have millions of subs. It actually kind of makes me sad.