https://www.mappingthelives.org/ shows 15 people living in Kanth in 1939 (not all of them Jewish). None of them have the surnames you mention. Jewish Families include DRYENFURTH, GAPPE, HOFFMANN, LOEWENSTEIN & TICHAUER. Obviously, anyone who left before May 1939 was not included in the census.

I hope this helps,
Rodney Eisfelder
Melbourne, Australia