Great observations. I’m hesitant to attribute qualities to a whole nation, but Hegel, following Fichte, did think in terms of a German identity, or Zeitgeist. That concept did seem to catch on in Germany in the 19th and through to the mid-20th century — that there is a German mindset distinct from the rest of the world. I don’t have much academic knowledge of German migration, but what I learned from tracing some of my ancestors is that most of the Germans who left for the US were from western and southern Germany and emigrated around the time of the Prussian-led unification of the German states. If Hegel has a blind spot is because he is very Prussian-centric, so I suspect he would see the migration of non-Prussian Germans in that light.