All four of my channel allocation charts are corrected and back up as free PDFs: 2.4 GHz, 5 GHz, 6 GHz, and a second 6 GHz chart that adds the Geofenced Variable Power row.
I found the errors on my own charts, and they came in two kinds.
Some were right when I drew them and the regulation moved out from under them. A couple were wrong from the first draft. Minor... but fixing these to be as accurate as possible lead me to learn more about the protocols and regulations.
Four PDFs, free and print-ready. Scan the code on the image. I will also drop a link in the first comment.
When did you last check the reference material you hand to other people, rather than the work you produce with it?