Here are a few that I find have consistent high quality content:
The B1M… His videos seem to really get into the nitty gritty logistics of various large construction projects.
Caitlin Doughty (Ask a Mortician)… I feel like each video is better than the previous. The historical death documentaries are incredible.
Climate Town… Videos about climate change & has a really fun sense of humor.
Neo… Lots of really cool explanatory videos. The editing is really good as well! The recent video on the presidential motorcade was very cool.
And one more… Reckless Ben… IDK if it really fits within the prompt of this thread… The channel is tough to watch with all the annoying humor & there is a lot of hit-or-miss videos, but at least lately, it seems to really be doing some very interesting things. I enjoyed his series on mckamey manor.