>>>Everyone who has claimed & some still claim that “Jews (or Antisemitic officials) changed their last name at Ellis Island is very mistaken as it almost never happened
My grandfather changed his name to a more Americanized one due to the insistence of the Ellis Island officials. I know plenty of other such people.
It’s not for no reason that in Eretz Yisroel people have names like Greinaman and Shteinman while in American there are only Greenmans and Steinmans