It's a mistake. Check the distance:
View attachment 274490
View attachment 274491
Lower distance means better fit. So, the Sudanic sample approximates that part of our ancestry way better.
I don't understand why the eggheads spend a whole year writing to publish a paper while performing a damn rookie mistake like this. It's like they don't have any sense and can't read the literature. 70% of studies I read show massive neglect of rudimentary things that messes up the quality.
They did something massively wrong if their result is that we're a quarter non-African, half Mota, and quarter Sudanese.
They're either using a statistical tool that doesn't quite measure autosomal values quite how we want to interpret it, or one of those fucking samples is compromised. Perhaps they botch the statistics. But that would be crazy since they check those things before publishing.