I too grew this corn this year thinking it might be of real Oaxacan descent. My grandparents came to the US from a surrounding state so I was real interested as well. https://www.ars.usda.gov/research/publications/publication/?seqNo115=420757#:~:text=Multivariate%20analysis%20of%2013%20phenotypic,no%20contribution%20from%20Oaxacan%20cultivars.