That list is long so I'll just do recently viewed that I'm actually subbed to.
Baked Beans Garage:
https://youtube.com/@bakedbeansgarage
Making garbage vehicles into daily drivers, but the host's personality is the reason to watch. Also an autistic obsession with old lawn tractors on the side. He has too many, it's great. Latest video is a pretty major RX7 Frankenstein build, and a tub of Vaseline assembling various chunks of many dead rotary engines into one that works.
Low Buck Garage:
https://youtube.com/@lowbuckgarage
Like Beans, I just like the host or I wouldn't care. Difference here is boomer and desert biome vs millennial in the rust belt.
Weird Explorer:
https://youtube.com/@weirdexplorer
Highly underrated. He travels around the world eating every fruit he can get his hands on. Occasionally he'll make something documentary quality like his feature on the history of Nutmeg but I like all of it. Currently he's in a period of burn out, but even his backyard at home videos are fun while he rests.
The Light Herder:
https://youtube.com/@thelightherder
A lifelong obsession making analog video feedback fractals and the latest rig he's built is absolutely mind blowing. Very specific, very beautiful.
Rabbit Hole:
https://youtube.com/@rabbithole
Very new channel but seems to be popular pretty much immediately. This is very relaxing light hearted stuff. Their amazing video on four leaf clovers earned my subscription.
Greta Loot:
https://youtube.com/@gretaloot
Another smaller channel run by a young Lithuanian woman. It's partly nostalgia bait but also she's a great aggregator of interesting and strange websites.
Marcel Vos:
https://youtube.com/@marcelvos
A dutch youtuber who is the Pannenkoek2012 or Red Logic of Roller Coaster Tycoon. Besides the eye catcher videos making coasters longer than Universal Heat Death, I'm not sure anyone should care unless you really, really like RCT 1, 2, and OpenRCT2.
Bonus runner up:
https://youtube.com/@deurklink
For OpenRCT2 update overviews and community made challenge mega parks.