Always seem to watch Seth’s Bike Hacks, even though I have little interest in constructed projects or constructed trails, etc.
Mctrailrider and bkxc – selectively watch those for places I’ve been or interested in going.
Cathrovision – watch the lot for the race analysis stuff
Not seen a Barry Godin vid for ages, but used to watch them all (prolly cos they were vimeo, and nobody uses that)
GCN/GMBN – watch a few, but skip anything to do with big-wheel BMX, and I got a bit bored of half the tech vids (doddy just seems too overkeen and seems to have had one of everything since MTB came about). Mostly watch the ones where they get out in the hills bikepacking etc. or the SDW in a day challenge etc.
Pinkbike – only ever watch Friday Fails, mainly to justify why I don’t do sick to the power of rad – the best ones are when the bike hits them again from behind, or they get totally submerged in puddle/river.
non bike stuff – for me it’s periodic videos, standupmaths, numberphile, computerphile,… and a couple of channels mainly related to hiking the national trails and various wainwrights/munros/etc.