Is it common to have recent Scottish English Dutch and German? immigration to the USA

I'm researching my ancestry and i was confused on something some people said about my ancestry so i posted about that which im still confused about but on the way some comments assumed that those parts of my ancestry were fairly far back ( early 1800s and before) that bit makes up around 65 to 70 percent of my ancestry and almost all of those ancestors i have came within the last 130 years or so i was just wondering how common it is since i cant find much info on it