There's a section about YouTube in this video [1] by Samuri Guitarist called "How Much Money Guitarists Actually Make Might Surprise You". The YouTube money is covered in the "The Content Creator" section.
Overall the video lives up to its title. I was in fact surprised by how much guitarists actually make. The surprise worked both ways--some of the ways guitarists might make money paid much worse than I expected, and some paid much more.