Judging by https://pdc.wikipedia.org/wiki/Haaptblatt https://pdc.wikipedia.org/wiki/Haaptblatt the Amish/Mennonite German is no more different than any of the m

Judging by https://pdc.wikipedia.org/wiki/Haaptblatt https://pdc.wikipedia.org/wiki/Haaptblatt the Amish/Mennonite German is no more different than any of the many dialects (Hochdeutsch being a koiné language "Dachsprache") one hears in Germany today. Compare https://pfl.wikipedia.org/wiki/Wikipedia:Haubdsaid https://pfl.wikipedia.org/wiki/Wikipedia:Haubdsaid > „Wir können alles. Außer Hochdeutsch.“ == [People from Baden-Württemberg] can do anything. Except speak German.