I’ve always been under the impression that confusion comes from focusing solely on the word “New’.
Possibly. Focusing on any ONE part of a name can cause confusion. And, that can apply to serial numbers, as well.
I have Blackhawks with two digit serial number prefixes AND the word "New" on them. (New Model Blackhawk)
Also had Vaqueros that just said Ruger Vaquero, and one that said Ruger NEW VAQUERO.
Doesn't seem to matter what "rule" you come up with, or what pattern SEEMS to be consistent, sooner or later they will make an exception, either as a limited run, or as new production...