I wish I could remember where I read this information, but there is a small percentage, just a single digit, of mitochondrean DNA among South American mummies dated pre-Columbus that is neither Asian nor Polynesian, but Mediterranean in origin.
I'm not aware of any and if you locate where you read that I'd sure like to read it too.
A, B, C, D and X are the 'known' haplogroups in the Americas.