Prof. Krause and his group have analyzed DNA of thousands of ancient skeletons. And performed Principal Component Analysis (PCA) on their data. Joannes has also sequenced the DNA of Denisovans. See map at the bottom for the geography distribution of the populations.

See also Early Human Migration (Wikipedia) and the Pre-Modern Human Migration (Wikipedia). I need to map the Trypilian and Cucuteni cultures. There also was a question which part of the genome was analysed : coding and non coding region. There are less than 100 differences in the genomes of sapiens. Thousands in the non coding regions...