I was looking at the 3 German names you gave and came across this one
Egon Peter Stix
U.S., Social Security Applications and Claims Index, 1936-2007
Name: Egon P Stix
SSN: 552740731
Gender: Male
Race: White
Birth Date: 10 Aug 1923
Birth Place: Vienna Vienn, Austria
Father Name: Emil Stix
Mother Name: Josefine Mittag
Death Date: 15 Feb 2001
Type of Claim: Original SSN.
Notes: May 1964: Name listed as EGON P STIX
Have just found him on a passenger list with his name crossed out, occ hotelier
UK, Outward Passenger Lists, 1890-1960
Name: Egon Stix
Gender: Male
Departure Date: 15 Jun 1955
Port of Departure: Southampton, England
Destination Port: Montreal, Canada
Ship Name: Ryndam
Other links
https://familysearch.org/ark:/61903/1:1:JTHZ-236https://familysearch.org/ark:/61903/1:1:KTQT-TGJ Will have another look but did you also notice a Gertrude (A) Stix who makes an appearance for 2 marriages 1938 & 1953 ?