youtube.com/Chef John is a treasure, every recipe I’ve followed of his has been a banger! Highly recommend
Guitar related
youtube.com/Eric Haugen is a fantastic guitar player/teacher, I love his mellow Bob Ross-esque vibe
youtube.com/Philip McKnight is the god of the guitar gear heads. Has a ton of great videos showing how to do simple guitar repairs, reviewing gear etc.
Comedy/pop culture
youtube.com/Internet comments etiquette is a hilarious channel that teaches how to leave respectful comments in this increasingly hostile and confusing online world.
youtube.com/Red Letter Media - movie/tv critics with great skits and characters. Maybe the best thing on YouTube IMO
Board Games
youtube.com/Really great board game reviews, I’ve found a bunch of my favorite games here
Educational
youtube.com/Amazing 3d renders and walkthroughs of complex machines/systems. The video on the HMS Victory is inspired.
youtube.com/Professor Dave does science education, great videos on many topics.
Motorcycles
youtube.com/FortNine puts out the best moto content I’ve found on the Internet.