A name to attach to the origins of the manuscript

[Rafal]

Even though universities switched to paper early on (from 1350 onwards) (reusability), paper was not available everywhere.

Exactly. I don't understand why everyone assumes that paper was an option.
If VM was made in early 1400s as our mainstream view claims then paper was at that time a total novelty or unknown thing in many places.

You are not allowed to view links. Register or Login to view.
Papermaking then spread further northwards, with evidence of paper being made in Troyes, France by 1348, in Holland sometime around 1340–1350, and in Nuremberg, Germany by 1390 in a mill set up by Ulman Stromer. This was just about the time when the woodcut printmaking technique was transferred from fabric to paper in the old master print and popular prints. There was a paper mill in Switzerland by 1432 and the first mill in England was set up by John Tate around 1490 near Hertford, but the first commercially successful paper mill in Britain did not occur before 1588 when John Spilman set up a mill near Dartford in Kent. During this time, paper making spread to Austria by 1469, to Poland by 1491, to Russia by 1576, to the Netherlands by 1586, to Denmark by 1596, and to Sweden by 1612

Today new things spread immediately. One year ChatGPT appears in USA and the same year people are using it in Tadjikistan. But in the 15th century it was different. There could be some workshop producing paper in Nuremberg but it didn't mean that paper was known in some small town 50 kilometers far from Nuremberg.