Apple Watch playlists are different from iTunes
When I play the "Music" app on my Apple Watch, and want to select a playlist, what I see is a list of playlists which doesn't match the list of playlists on my iTunes, iPhone, nor iPad. It is missing every playlist that is in a playlist folder, and has some playlists that I used to have on my iTunes. I don't know where it gets its list of playlists.
This confusion may be associated to my Apple Music subscription (I will create another post trying to clear some misunderstandings there). My iPhone and iPad have "iCloud Music Library is On" checked, and they show far fewer songs than I have on iTunes.
Why doesn't my Apple Watch show the same playlists that my other devices show?