Haven’t participated in any of these dna studies.The one i did find for Weichlein,Wickline,etc families you have to be a man to participate.I too wish I had my dad write things down about the family,especially since he knew his grandparents and their brothers and sisters a few of whom came to America.My great aunts ,his father’s sisters used to write relatives in the old country,even have a photo of a tombstone with three names on it from Himmelstadt that some cousin sent my greataunt,Sister Generose.At least my dad got to go to Garmisch when he was TDY to England and Germany in the late 1950s.Unfortunately he didn’t have enough time to go to Nuremberg and consult the familyhistorian and our family history books . But he did get to look at parish records in Garmisch for information.
My mother and her brother and sister were orphans up in Buffalo,Ny .Oh my mom had some contact with relatives,but wouldn’t know who in the world to contact up there  about family history,or the family’s history in Hungary.Glad you were able to make the connection with your family.