Ashton's Retro Computer Room
A fun little shorts channel that features a bunch of old computers and software.
Captain Disillusion
The Captain does pretty much anything with visual effects. He's mainly known for debunking faked videos but also does fun informational videos that go into depth on how cameras and video stuff work.
Technology Connections
This channel covers just about anything technology related.
(seriously, he has a series all about the inner workings of a mechanical pinball machine. Part 1, Part 2, Part 3)
OfficalNerdCubed
A gaming channel thats near and dear to my heart. I started watching him in 2013ish. He's been a massive influence on my opinions on videogames and how they should be.
Primer
I would best describe this as a science channel. He does a lot of simulations to describe things like natural selection and supply and demand.
ChadCat
This channel takes those long ramble-y videos from channels like moistcritikal or someordinarygamer and condenses them into short 10-30 second long videos. Truely a godsend.
DougDoug
DougDoug is a hilarious coding streamer. He's done so many impressive little code things that I'm jealous of
Dankpods
Dankpods is a youtuber who reviews headphones and plays with 2000s era tech! My first exposure to him was on Linus Tech Tips and I enjoyed him on there.