Kiwi living in the UK for three years now. I’ve started having trouble distinguishing NZ from Australian accents, which is quite funny to me, given that I used to find them so different and easy to tell apart.
I don’t find American accents abnormal and I’ve lived outside of the US for 20+ years.
That said, I know that some of the things I say now like “cheers” or occaisionally “mate” has to sound completely abnormal and contrived to my homies or family.