My Italian steed from 1953 has 53cm ctc seat tube 55.5cm ctc top tube, a top level "production" bike, many other Italian bikes from that era are similar, such as Bianchi. Also, its 72.5 degrees parallel, I was kind of surprised how "contemporary" it is, with tight fitting for the front brake.

I think "classic" geometries for a given nationality have to be more defined. While not absolute, each decade seems to have its own flavor.

The American's especially later such as in the 70's drew from a number of "styles"