One of my favs is emmymadeinjapan. She's easily the best culinary YouTuber ever! Her personality shines like the sun, she's so pleasant to watch, very open-minded and has a heart of gold. Her smile is infectious. And she tries all sorts of interesting foods you've likely never heard of, as well as new recipes for classic favorites! Definitely worth subscribing to. Note: she's not actually Japanese but studied there for a while. She is Chinese-American.
My other fav is Scott The Woz, a hilarious video game reviewer, usually covering past eras in Nintendo gaming history. If you're a Nintendo fan, he's definitely worth watching, along with my other favorite Nintentubers: Arlo, BeatEmUps, AntDude, there's so many I can't name them all.
For cultural stuff, I enjoy watching Diane Jennings, a YouTuber from Ireland who makes videos about Irish society in comparison to American customs and other things. For Scottish stuff, subscribe to WeeScottishLass. Her and Diane once did a collab together too!
For general knowledge and interesting videos, I recommend Tom Scott, who always posts interesting and thought-provoking content, as well as Daily Dose of Internet for videos of the now.
I could keep going on.
~Grand winner of Push the Button  in Forum Games with 2113 points!~
~Winner of Doors of Luck 37: The Desert Expedition!~