I've only started using a mac part-time while I've been developing an iOS app over the past few weeks, and I keep seeing different names for the OS version. I have no idea what version I'm on, or if Big Sur came before Sierra, or what. I know I could look it up, but it seems that in the name of good user-experience, I shouldn't need to.
You'd think they'd at a minimum say "people aren't going to be able to figure out which is which, so let's go in alphabetical order with our naming.