Almost all of us white folk here in US are...er I wouldn’t say “Eurotrash”..but European mutts yes. I’m still trying to figure out “exactly” what I am but I’m finding it’s too wide a mixture for my liking lol! There’s Irish and English/Welsh and German/Dutch for sure and smidgen of Swedish, but there was a Jewish last name from an ancestor that came from the area which is now Transylvania, Romania but used to be Austo-Hungary whose descendant traveled to England and married an English woman and their sons went to Jewish schools but the old pictures of them I have they don’t LOOK Jewish (the men) some of the brothers look Italian and others look somewhat German or something. However on my my mother’s side...her father told her his folk came from Germany only their last name is Scottish...Why am I telling a complete stranger this I dont’ know lol!
Why not just go with "AMERICAN"? Don't worry. You'll fit right in.
Both terms..."trash", and "mutts"...are unneccessarily derogatory.