I'm mainly into machining
Abom79- love his channel, we've traded some tools back and forth, he likes the big boy machines and parts
Keith Rucker-same have done some horse trading/gifting to support him, he likes restoring old tools and machines. He is heavily involved in the owwm.org woodworking and his site vintagemachinery.org that many here use to ID old machines. Super humble and enjoyable to watch.
oxToolCo-tom has a great channel, he's a brilliant machinist, I learn a lot of precision measuring and figuring from him. Machine setup and fixturring he's great.
Keith Fenner- he started my YouTube obsession back when he first started, met him this summer when I stopped by his shop. Cool dude.
James Kilroy-great guy one of my new must sees, good humor has nice tools, just got a 3d printer so he's adding that into the machine work
Doubleboost- john from England, fun to listen to, he just gets anything and everything done in his shop. Real nice guy
Tubalcain-one of the originals. I don't follow him as much as the others but I did at one point.
Others I've recently been following:
Halligan142-general machining
Compedgex-powersports type machining
Shadon HKW-surface grinding
Bcbloc02-big machining rebuilding a barn too, I like his style he just started to get some views, i was referred to him from James Kilroy.
Randy Richard in the shop-general machining
Walter sorrells-knife making
Jimmy diresta-fun fast speed channel on making stuff
Weldingtipsandtricks as mentioned already good welding stuff, bought his tig finger to support his channel
Switch and lever
Arduinovsevil
That rounds out about 95% of my YouTube followings