What are the grades of Italian pasta?
After the clarifying comments, I think the question now boils down to reading the nutrition table and to the Italian classification of flour, in particular, durum since it's the most used for the pasta production. I can refer to the table on the Italian Wikipedia, where it's compared with the US classification. https://it.wikipedia.org/wiki/Farina#Sfarinati_di_grano_duro

However, also concerning food, Italy is the land of exceptions. For instance, fresh pasta usually has a part of soft wheat and some regional types may use flours from other cereals at all. Not to mention the pasta for the gluten-free market.

Exceptions do not mean that something can be called pasta in a region and not in another. The regulations are the same for the whole country and are here https://en.wikipedia.org/wiki/Pasta#Italy