And if you look at that list of names R68, just on the sample page, few of them are distinctly "Russian"--- there's everything from the Sephardic name Abarbanel to the German Abend and Abelson Yiddish is a dialect of German and thus most Jews used names that worked in both languages.
Here's Wikipedia on the subject
[quote] Jews have historically used Hebrew patronymic names. While permanent family surnames started appearing among Sephardic Jews in Iberia and elsewhere as early as the 10th or 11th century, they did not spread widely to the Ashkenazic Jews of Germany or Eastern Europe until later. However, Non-Ashkenazi Jews who had immigrated to what was considered Ashkenaz (such as Sephardic Jews who fled the Inquisition) would often keep their surnames and/or Ashkenazize them (e.g., "Melamad" was kept; "Leoni" would be Ashkenazized to "Leib"), and some of the already-settled Jews in communities in large cities (such as Prague or Frankfurt am Main) began to adopt various surnames. Surnames derived from the name of the matriarch of the family were adopted by some households. For example, the surname Rivkes is derived from the depreciatory diminutive form Rivke/Rivkeh of the female name Riva, which in its turn is a diminutive of Rebecca, so the surname literally means "Riva's". The Slavic language-influenced counterpart is Rivkin.
[quote] Other surnames came from the man's trade such as Metzger (butcher) or Becker (baker), and a few derived from personal attributes, such as Jaffe (beautiful), or special events in the family history. The majority of Middle Age surname adoption came from place names (for example Shapiro, from Shpira, Speyer, a Rhenanian city known for its famous Jewish community in the 11th century), often a town name, typically the birthplace of the founder of a rabbinical or other dynasty. These names would permutate to various forms as families moved, such as the original Welsch becoming Wallach, Wlock, or Block. Since these surnames did not have the official status that modern ones do, often the old surname would be dropped and a new one adopted after the family moved their household.
[quote] The process of assigning permanent surnames to Jewish families (most of which are still used to this day) began in Austria. On 23 July 1787, five years after the Edict of Tolerance, the Holy Roman Emperor Joseph II issued a decree called Das Patent über die Judennamen which compelled the Jews to adopt German surnames. Prussia did so soon after, beginning with Silesia: the city of Breslau in 1790, the Breslau administrative region in 1791, the Liegnitz region in 1794. In 1812, when Napoleon had occupied much of Prussia, surname adoption was mandated for the unoccupied parts; and Jews in the rest of Prussia adopted surnames in 1845.
Did you really think all those Goldbergs, Rosenbergs, Schwartzes, and Shapiros were German Jews?