It can be either or both.
Schwab is a German and Jewish regional name for someone from Swabia (German Schwaben), from German Schwabe'Swabian'. The region takes its name from a Germanic tribe recorded from the 1st century bc in the Latin form Suebi or Suevi.
The name Wertz can be German, Jewish or German-Jewish.
It is of German origin, but it may be a Jewish name.
The name is in German-Jewish (or Ashkenazic) and means "Deerfield."
Wasserburger can be a German Jewish name, but like all German Jewish names, it can be used by both Jews and non-Jews.
German
The family name Kaminsky can be German, Jewish or German-Jewish in origin.
There is no German Jewish name (or German): Sharp. I believe there is no such German word, at least because of the combination SH. In German it is written: SCH.but, the name Scharf (means: sharp in German and Yiddish) is well-known in Jewish People.
Buddy Schwab's birth name is Eugene Schwab.
Howie Schwab's birth name is Howard A. Schwab.
No. It is mainly a German name but it can be Jewish.
Yes, it is either of Jewish or German origin.