I *think* you first two go to the same list. I deregistered all my devices in one and they’ve all gone — had to re-sign in again to kindle to continue reading a book. Your 3rd list was different for me and just contained fire stick (and a video I had viewed, deleted that too) and Alexa which I’ve never had but did set one up for a relative so it probably got added then.
Biting the hand that feeds IT
