They are certainly different from the Germans in that they come from an undisciplined lazy culture; the Germans were had working, disciplined and very well educated. These folks aren’t quite savages in comparison, but almost.
Western genealogy is certainly not homogeneous. And that’s supported by the trails of etymology, mathematics, and theology — not that I can conveniently cite any relevant references. The point concerns the Barbarians and what impact that may have had on Nazis.