I really like:
SHIEY
https://www.youtube.com/c/shiey
If you like urban exploration, train hopping and insanely dangerous structure climbing, this is for you. Shiey's videos are really well filmed and edited, there are no ads (although he has a patreon for you to chip in if you want) and the videos deliver as advertised. In other words, it's not click bait bullshit like 99% of YT "content". I only discovered him in the last few months, but he's been making videos for over two years.
Barely Sociable
https://www.youtube.com/c/BarelySociable
YT is glutted with "mystery videos" that are largely click bait, but this relatively new channel has been producing some really good ones. The amount of research put in to creating the videos is impressive and you can tell that the creator (name unknown) really takes time to get to the root of things. As a result, new videos appear infrequently, but are always a welcome event.
What u got?