What do you mean with expat? You'd like to get an employer in the US that sends you to work in the EU on their behalf?
"expat" means "immigrant" but it's used by people who believe they are somehow above others
An "expat" is just a white economic migrant.
They'll try to spin it. They'll whip out irrelevant definitions. They'll invent arbitrary distinctions.
They are wrong.
"Economic migrant" has always, does now, and will always include "seek higher standard of living" in its context and definition and "well I just, you know, kinda vibe with the culture" and/or "I like, you know, just consider myself a global citizen and want to see the world" is "seek higher standard of living".