I have my suspicions. In hebrew the Cohen is a member of just one tribe. They are the ones who own the priesthood. They are the leaders.
This same model of one tribe which supplies the kings who rule all the other tribes is found in central Asia. In Mongolian the leader is the Khaghan. This word became KHAN in Turkish and in the Khazar empire, the war leader was called the Kunde. This word is the root of the Gothic word kuningaz where the AZ suffix means THE. The KUNING became THE KING in English. The whole concept of Western monarchy comes from these Central Asian roots.
I believe that it was a Central Asian tribe that united the other tribes of the Hebrews and that the Cohanim or Cohen family are descendants of this tribe. Some have noted that the Cohen Y DNA signature is very common among the Kurdish people, who happen to live in the mountainous country on the edge of the Middle East. If they originally can from elsewhere, that would fit, i.e. they mostly live at the edge. But it would also fit as a central region concept where the Cohanim originate in Kurdish land and some went north to Mongolia, others south and west.
In any case, the Kohanim were only one of 12 tribes. The province of Judea that was conquered by the Romans, represented only two tribes Israel and Judah. Where are the other 10?
This is very important because God promised his PROMISED LAND to all 12 tribes. One tribe does not have the right to the heritage that God gave to all. The entire basis of a Jewish Israel is a fraud. The Ashkenazi people have hidden their origins and essentially are faking their ethnicity.
It is true that Hebrews scattered in all directions during the diaspora. It is true that the Persian empire welcomed many of them. This is where they learned tailoring and adopted the Persian style coat which is the basis of the modern suit jacket. Persia was a powerful empire and traded far and wide. Aramaic speaking people spread out along the trade routes which is why the writing systems of India (Kharosthi), Bactria, Tibet and Mongolia were based on Aramaic script.
Eventually, the Khazar Turks established an Empire with their capital at Atil near modern Astrakhan on the Volga river delta. For some reason, the ruling Turkic tribe who supplied the high priest and had higher status than the Kunde or war chief, converted to Judaism. As a result, many Jews from the Persian Empire moved to Khazaria.
Then began something that few have studied or written about. Khazaria was steppeland like Ukraine. This territory is an AMPLIFIER OF ETHNICITY. Whoever lived in this territory had more than enough to eat except during famine periods. As a result, families of 14-16 children became very common. Population soared, people moved out and filled the empty spaces, had more children. The Ashkenazi Jews were now one of the people riding the AMPLIFIER WAVE.
Eventually the Rus in Kiev had enough of paying tribute to the Khazar empire so that rode over and destroyed the capital. People scattered, unified leadership was lost, and the Khazar empire was no more, Now these people became Rus or Polish or Hungarian. Think Hussar cavalry. Think Polish Szlachta with their Turkic tamga coats of arms. Think the original king list of Austria with all its Hebrew names.
It was these Ashkenazi Jews living in Austria, Poland, Lithuania, Belarus, Ukraine and Russia that the Rothschilds wanted to mobilize and they used blood and slaughter to do so.
Now along the way, the Ashkenazi did incorporate a lot of non-Hebrew DNA because this is how humans are. Everybody alive today is probably descended from Genghiz Khan. Everybody is probably descended from King David. This is how DNA works. It does not travel through time in a straight line, it blends every single time it replicates, which means there is no such thing as pure blood. Most of your genetic ancestors are hidden from your DNA analysis because 50% of the DNA is lost every time it replicates.