Again mostly due to chance, I found a Javanese genome (modern) in the NIH Database, and it is notable because at even 30% of the genome, there is no match to Heidelbergensis. This is not true for many of the populations in the dataset, which at this point contains 58 global ethnicities. The logical conclusion, is that the Javanese people are an isolated, modern population, that are closely related to very early humans, and no one else, save for the Neanderthals and Denisovans. This is really interesting, because e.g., the Norwegians, who are plainly geographically isolated, are related to basically everyone at 30% of their genome, which you can see below. In contrast, this Javanese genome produces a very thin distribution at even 30%, which is only 5% above chance. All of the code can be found in my paper, A New Model of Computational Genomics, and the dataset is linked to below.

https://www.dropbox.com/s/zwt1bcqqmqkleca/mtDNA.zip?dl=0