On paper, I have a third cousin once removed here on WikiTree who in on Gedmatch.genesis, as am I. Comparing our DNA shows no matching whatsoever.
My DNA appears to strongly indicate, when combined with the genealogy I have compiled, that [Batcheler-21], my biological paternal grandfather, was not the child of [Batcheler-22] and [Totten-284].
Should I wait to see if any further Totten family members are tested (there are very few Batchelers out there)? My birth father hasn't been in my life for 50 years, but is stll alive and is in contact with my one full sister. I have the sense that if I could get him to test, it would seal my assumption that his bio father was adopted.
My primary question, then, would be how to accurately show documentation (when proven) that Batcheler-21 is not the biological child of the aforementioned parents (most importantly, so WikiTree and other systems don't continually try to link me to their family trees). I'm also on Ancestry (DNA test taken there) and on MyHeritage (DNA uploaded there) as well as on FTDNA - where this all started.
I have an adoption angel working with me, but she's on temporary hiatus due to a death in the family (will likely be back sometime next month). My big goal, and the one she is helping me with) is to find out who my bio paternal grandfather's parents really were, as that's where the central Mexican/indigenous DNA I have appears to have originated.
postscript: I was born with XY dna and have taken FTDNA's Y-25. Next month, when they have their father's day sale, I plan to upgrade to the Y-111 as that may provide more more detail on the mystery great grandparents.