https://en.wikipedia.org/wiki/Demographics_of_Israel#Jews
https://en.wikipedia.org/wiki/Israeli_Jews#Population
These articles agree that Jews of European ancestry comprise around 44.2% vs 44.9% of Middle Eastern and North African (MENA) ancestry. The study that gave these numbers admitted on having methodological limitations, so it may be undercounting MENA ancestry.
Another interesting statistic is the paternal ancestral origin of Israeli Jews, with 37% having Israeli paternal origin, 34.6% European, American or Oceanic, and only 27.9% having Asian or African. So at least for the last couple of generations, a plurality of immigrants of of European descent.
I’m sorry, but I’m not finding the well over 50% statistic.
What is also interesting to me is the lack of official statistics from the Israeli government about this ethnic brake down, especially since they make distinctions between Jews and Arabs, which kind of implies—at least to my ears—Arab Jews should not exist. To my ears Israeli culture fancies it self as European (being a member of UEFA, partaking in Eurovision, etc.).
It really looks to me like Israel has made an effort and succeeded in stripping Middle Eastern Jews of their identity[1]. A major tell sign is how Jews of Middle Eastern and North African ancestry speak Hebrew, not Arabic, despite the latter both being a minority language spoken in Israel, and despite the latter being the language of their ancestors. Colonizers often do stunts like these when absorbing the colonized population into their own culture.
1: https://www.aljazeera.com/opinions/2017/9/20/invention-of-th...