Germany is the cradle of Ashkenazim Jewery, located in the Palatine on the lower Rhine at the Moselle River triangle, where my family originated. After the fall of Jerusalem, the Ashkenazim went to Rome in an effort to make a living, but Rome was already swamped with trades people, so in AD 300 they chose the only remaining option, to service the Roman army on their way north to defeat the barbarians on the other side of the Rhine. Upon completion, the Jews saw the fertile lands in this area, and decided to stay and grow vineyards et al.
Extensive DNA testing of the progeny of Israel has taken place, and I know that Ashkenazim DNA is quite unique and clearly defined, along with other tribes like the Levites who are considered to have the most pure DNA, varying by only 1.5% over the centuries, and that is extremely important for selecting the priests who will serve in the Third Temple. It has been over a decade since I last checked out the current state of DNA studies managed by Stephen Benner [Ben Ner] at U of Florida, and how much more information they have developed since then. To get married in Israel, a system managed by the Ultra-Orthodox, Chasidic contingent, you must prove you are a Jew, which is often proven by DNA.
I have been into this stuff for years, and am quite familiar with the Old Testament and the works of many Jewish historians, which has given me a feel for God's plan for Israel; and the stuff you posted does not in any way correspond with my studies over the decades. I remain completely satisfied with the information I have derived from Scripture, so your ideology does not interest me. I don't want my mind loaded down with hypotheses. I want it to remain clear, listening to God as I pursue my studies.