Earlier quoted context omitted.
I actually refer to his list of 20 simple, distinct colors ( https://sashamaps.net/docs/resources/20-colors/ ) which he came up with for this map, pretty frequently. It's a nice palette.
An easy trick is to rotate hue with a spacing of 1.618. That guarantees maximum separation with no near collisions for any number of hues.
https://gofiguremath.org/natures-favorite-math/the-golden-ra...