Here is the result of applying MCLUST to a group of Central-North European populations. The maximum number of 13 clusters is reached with 5 MDS dimensions retained:
Some clusters are population-specific (e.g., #7 for Finns, #10 for Lithuanians, #12 for Russians). Some clusters are semi-specific (e.g., #3 for Hungarians, #1 for French). Some populations are split into multiple clusters (e.g., Orcadians or Germans).
Here is a neighbor-joining tree of these 13 clusters based on the first 5 MDS dimensions:
12, 13: Russians
9, 10: Balto-Slavs
5, 3, 2, 4, 1: Northwest Europeans
11: A couple of Hungarians (*)
7, 8: Orcadians
I generally frown upon phylogenies for human groups, as I believe that human genetic variation is better represented as a network due to lateral gene flow. However, this tree gives an idea of the relationship between clusters.
(*) It's interesting that these 2 Hungarians are the same ones that showed an elevated "Altaic" component in my K=15 analysis.