The variances in nomenclature in the region spanned by the Alps makes classification of the mountains and subregions difficult, but a general classification is that of the Eastern Alps and Western Alps with the divide between the two occurring in eastern Switzerland according to geologist Stefan Schmid, near the Splügen Pass.
Try to answer this question if possible (otherwise reply "unanswerable"): Who came up with the general classification?
geologist Stefan Schmid