
You are an Anglo. And most people in America, CN, Oz, NZ fit that bill. It has to do with your culture, true, but also, what you look like plays a big role. There are people on periphery, true but not the majority.
Like here in OH most people are of German descent but they:
1) Don't speak German or have a German accent in English ( which is their first and family language)
2) Have never been to Germany and don't hold German citizenship
3) Don't have German names and do not identify with the German culture in any way.
4) Are not identified as German-Americans by anybody and don't identify themselves as such.
They look like this:

The Amish, otoh would not be Anglos by any definition.