The Youtube channels I would recommend are the following:
Tech/Science
S3 - The stories of people working to change the world.
Modern Day Eratosthenes - A great STEM communicator who provides a moderate level breakdown of STEM topics. Videos are less than 12 minutes long.
Ziroth - This channel focuses on highlighting new science and engineering projects that are helping the world transition to a zero carbon future!
Speculative Science
Isaac Arthur - This channel focuses on exploring concepts in science with an emphasis on futurism and space exploration, along with a healthy dose of science fiction. While we explore many concepts and technologies that are far beyond us now, we try to keep everything inside the bounds of known science or major theories.
Analytical Tech News/Stories
TechAltar - Analytical videos about tech companies [and their products or services].
Tech Business/Economics/History Video Essays
Asianometry - One of my favorite YT channels. He does a great job producing high quality videos about tech history, tech related economics, and sometimes dives into what that latest tech is and how it might play a part in our future.
Humorous Business Journalism
Good Work - “Edge-cutting” business journalism, with a healthy dose of humor mixed in. Actually covers things that you might want to know more about in the realm of business, trading, and why the American economy is so freaking weird.
The Making of a Movie/TV Show
It Was A Sh*t Show - Making stuff is hard, especially in the entertainment world when there are millions of dollars on the line. And we are going to talk about these disastrous, never ending, and sometimes dangerous productions. With video documentaries and a companion conversational podcast, It Was A Sh*t Show is an entertaining look at some of your favorite films and tv shows, and why they were such a nightmare to make.
Frame Voyager - Mini-documentaries on films without the clickbait negativity.
Mini/Full Documentary Makers
Peter Dibble - Obscure history from the Pacific Northwest and beyond. I recommend checking out America’s First Cross-Country Auto Race.
Kirby Ferguson - He’s best known for his documentary series called, Everything is a Remix. He made an updated and extended version of it. I recommend it.
Drue Langlois - animator/filmmaker who makes absurd and fun videos. One of my favorites
Wigglewood - another animator who’s in the process of making their own little shared world of silliness.
Oboeshoesgames - streamer who has a decent sense of humor and is actually pretty creative with coming up with little parody songs for the games he plays. He also knows a SHITTON about Bionicle and will throw in references sometimes, which is always nice to see.
RudeJackArt - artist/animator behind this masterpiece
SplinterChalk - very small YouTuber who does challenge runs in games, similar to MittenSquad (RIP Paul), but mostly focusing on the Batman: Arkham games. He does play others though.
ChadCat - he condenses other long-form YouTube videos (i.e. videos over 10 minutes) down to their most important details, usually taking up to about 20 seconds to a minute each time, calling them the “ADHD Versions.”
Venjent - DJ/producer who makes badass beats using sounds he finds out in the world, such as a squeaky door
2 Guys and A Cooler - family-run cooking channel where they make different cool things. Their video on pemmican got me interested in them.
CharlieBo313 - basically a modern anthropologist who goes to the 'hoods and ghettos of America and talks to the people who live there, and showcases what life is like.
Poe’s Sketchbook - stop-motion animator behind this badass fight
Luka Big Pants - strange guy who makes videos in that weird stuttery FMV game style. It’s all weird and absurd but it’s all really good.
Crazy Korean Cooking - a Korean family eating food, pretty much. They try different foods they never have, like Mexican and Jamaican foods, then they’ll experiment and try mixing the new stuff with their Korean food and it gets pretty fun. The parents are honestly super fun to watch because they just enjoy it all.
BM Cartoons - an animator who just makes silly little cartoons.
Edit: oh there’s more.
Fearnley Fitzroy - the animator behind this absolute masterpiece and other fun souls-like dance videos.
GilGamesHello - gamer who plays a lot of physics-based games like Exanima and Half Sword.
Spine_apples - Saruman the Stupid
TRYBALS - a very cool channel that shows western media and such to tribal villagers from Pakistan.
Bill McClintock - someone who mashes up songs from wildly different genres and somehow makes them sound fuckin awesome. Stuparena (a mashup of The Macarena and Stupefied)
Bushy - another challenge gamer, but he focuses on Elden Ring and other Souls-likes.
Bax Taylor - a musician who makes his own original songs, but also does silly covers of others like Toto doing Apple Bottom Jeans, or Frank Sinatra’s Balls In Yo Jaws.
Media Zealot - he breaks down different civilizations/organizations/other groups from different popular IPs and says why they wouldn’t be able to work in reality. Like “villains too stupid to win” and so on.
Corey Laddo - an SFM animator who makes funny shorts, based around G-man and Gordon interacting and playing out a meme or something.