See
the following article:
Biography of Gonzalo Rubio:
The above languages that resemble the Sumerian language actually confirms the migration route that the Fertile Crescent people made into the Steppe(as seen in the genetic study of Maykop).
The populations of the the Fertile Crescent, after the Late Neolithic maybe spoke two languages, Sumerian and Akkadian. Maybe the Sumerian language(Turkish) in that period was spoken by people with G, J, L, T, and the Akkadian language was spoken by people with E? And maybe these people with G, J, L, T started to make the first migrations into the Southern Caucasus. And then they moved into the Northern Caucasus meeting the people(speaking Indo European language together with Finnish, Hungarian and Native American types of languages) of the Steppe/Siberia(with C, N, Q, R)? And then mixing in linguistics and genetics happened in the two groups?