As I understand it, "being white" referring to skin color and associated racial superiority is a 16th century American concept, right?

And the Nazis were going on about the supposed "Aryans".

Are you aware of any primary sources where the Nazi leadership / most influential intellectual supporters of Nazi/NSDAP ideology related to the concept of "being white"?

Was there any discussion of it?

Did any of them transferred that to be relevant to the German Volk / did more than a simple word translation to "weiß"?