0. E-M44 origin comment by 23andme

As of 4/2020 23and me has this to report:

Men bearing E-M44 may have migrated to Sardinia with the Vandals. ..

E-M44

Your paternal line stems from a branch of E called E-M44, which split off from its brother lineages between 13,000 and 15,000 years ago. E-M44 is considered to be West African, and is usually found in Mali, but it has also been found in Sudan and Sardinia. Your haplogroup’s presence in Sardinia could be related to a group called the Vandals, a Germanic tribe that moved many men from Mauritania into Sardinia as mercenary troops.