A bunch of my other subs have already been mentioned, so I want to add Caitlin from Ask a Mortician. She has demonstrated integrity and consistently high effort for her channel despite growing to over 2mil subscribers.
Jenny Nicholson is another that’s been around and gotten big but her videos have only gotten more weird and interesting.
Climate Town has rapidly become one of my favorite channels and consistently puts out well-researched, informative and entertaining vids