What’s the likelihood of most modern SSA groups (horners ancient east african ancestry included) having some basal eurasian ancestry that isn’t attributed to any recent west eurasian admixture or more deeper ancestry like iberomaurusian? Do you believe that the basal eurasian’s could've possibly migrated back into Africa and mixed with the ancestors of modern SSA groups? I ask this because I remember seeing these deep layer experimental calculator results on an antheogenica thread and seeing niger-congo and nilotic groups getting around 1/3rd ust ishim ancestry which some speculated could be due to a very ancient eurasian ancestry in modern SSA groups that could possibly be basal eurasian