Its possible you know the Jews I think they can merge with the aristocracy bloodlines from the UK, as these are their equals or more anyway in the world. This was starting to happen anyway through time as they are in the same social circles.
The Jews they know through the women they can get the genetics they want. Each generation through time 20% of Jewish women married non-Jews. This also meant 20% of Jewish men couldn't find a Jewish wife, so then they were pushed out of the tribe. Because Jewish women are so smart they can outcompete other women for basically any husband they want. As men do really seem to value intelligence at least when choosing a wife as opposed to a lover.
I think among the Jews there is huge jealousy for the WASP elite, because the WASP elite is so much more attractive. And there are members of the Anglo-elite who are equals of the Jews or more like I said in raw intellect. Although imo Jews mog them in aggression and ambition and energy.
They got some issues now in America though even though they look really strong. One is 50% of Jews in America marry non-Jews. Now 50% of those couples they raise their children as Jewish, I am guessing the ones where the women are Jewish. So it doesn't actually affect their numbers. On the other hand an issue is Jewish women are only having 1 child on average in America.
Another issue is importing so many intelligent Asians. Maybe they are hoping those families will be one level down in the global empire.