Please answer a question about the following article about Germans:

Persons who speak German as their first language, look German and whose families have lived in Germany for generations are considered "most German", followed by categories of diminishing Germanness such as Aussiedler (people of German ancestry whose families have lived in Eastern Europe but who have returned to Germany), Restdeutsche (people living in lands that have historically belonged to Germany but which is currently outside of Germany), Auswanderer (people whose families have emigrated from Germany and who still speak German), German speakers in German-speaking nations such as Austrians, and finally people of German emigrant background who no longer speak German.

What are people who have ancestral roots in Germany, but now live outside of Germany called?
Restdeutsche