Okay. So I looked up Dogon paternal DNA and found a site that showed the Dogon carrying Y haplotype E1B1A at 43%
This is what I found for E1B1A in North Africa and the Sahel
Populations on the northern fringes of West Africa, central Eastern Africa and Madagascar have tested at more moderate frequencies.
Incidence of E-V38
Population group frequency References
Tuareg from Tânout, Niger 44.4% (8/18 subjects) [14]
Tuareg from Gorom, Burkina Faso 16.6% (3/18) [14]
Tuareg from Gossi, Mali 9.1% (1/9) [14]
Cape Verdeans 15.9% (32/201) [15]
Maasai 15.4% (4/26) [7]
Luo 66% (6/9) [7]
Iraqw 11.11% (1/9) [7]
Comoros 23.46% (69/294) [16]
Merina people (also called Highlanders) 44% (4/9) [17]
Antandroy 69.6% (32/46) [17]
Antanosy 48.9% (23/47) [17]
Antaisaka 37.5% (3/8) [17]
E-V38 is found at low to moderate frequencies in North Africa, and northern East Africa. The some of the lineages found in these areas are possibly due to the Bantu expansion or other migrations.[9][18] The E-M2 marker that appeared in North African samples may stem from recent acquisitions.[9] However, the discovery in 2011 of the E-V38 marker that predates E-M2 has led Trombetta et al. to suggest that E-V38 may have originated in East Africa (please refer to the Origins section for the details).
Incidence of E-V38
Population group frequency References
Tuareg from Al Awaynat and Tahala, Libya 46.5% (20/43) [Note 1] [19]
Oran, Algeria 8.6% (8/93) [20]
Berbers, southern and north-central Morocco 9.5% (6/63) [21][Note 2]
Moroccan Arabs 6.8% (3/44) [21]
Saharawis 3.5% (1/29) [21]
Egyptians 8.33% (3/36), 1.4% (2/147), and (0/73) [9][22][23]
Tunisians 1.4% (2/148) [23]
Sudanese Hausa 12.5% (4/32) [24]
Somalis 1.5% (3/201) [18]
Ethiopians 3.4% (3/88) [25]
Oromo 2.6% (2/78) [12]
Amhara 0% (0/48)[Note 3] [12]
So this shows that the closest relatives who share high percentages of E1B1A are the Tuaregs in Niger at 44%. But the Tuaregs from Libya have the haplotype at 46%. Algerians in Oran and Egyptians carry it at 8%.
It seems that this haplotype shows the highest percentages in West Africa and decline as you move east and north. Could this mean that the majority of the individuals migrated south west while smaller numbers of individuals carrying this gene moved north and east? In any case, it does show that all these people do share a common ancestry after all.