What does Oberlander (or Chasam Sofer) have to do with Yekkes? Their minhagim (including havara) are closer to Chasidim. (Yes, I know they are not Chasidim [or Yekkes.]) Vien [now based in Brooklyn] is probably the largest Oberland kehila.
Not all of German Jewry were Yekkes (or followed the Yekkesh minhagim.)