'Azure Skies' is probably the the correct one - that got the AM/AOS. I found a cultural award given to one called 'Azure Sky', I suspect that was an error. Since outstanding plants get cloned (so that the one with the 'Azure Sky' entry was, no doubt, a different plant even if genetically identical to the AM one) I'd go with 'Azure Skies' being correct, labels have errors quite frequently.
Remember, too, that the first AM/AOS happened a rather long time ago (like 1997). There actually is a slightly higher-score AM/AOS in 2021, but the cloning certainly was done on the "original" one. So there are lots of clones of the original plant in lots of places, plenty of chances for errors on tags (like going from plural to singular).
Mine is not 4N.
I believe I'm at least two years away from flowers.
There was very little root in the pot, but what is there is branching and there is a fresh root developing at the rhizome.
You can just see it through the pot above my thumb.