https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2135301/
http://www.rhesusnegative.net/staynegative/wp-content/uploads/2016/07/Pollitzer_et_al-1962-American_Journal_of_Physical_Anthropology.pdf
>And the Cherokee are one of the few tribes who are RH negative too. hmmm
Wrong, Anon. Go back and reread the papers. Rh negative in this group was 0.038 (3.8%). "R^0 "or "r" means Rh negative in this paper. All the other "R" antigens are Rh+ markers.
Cherokee are mostly uniformly O+ ←exactly the opposite of your claim.