I’m not American, but I after living here - I’ve noticed a few. They sometimes say “axe” for “ask”. They fail to enunciate “respiratory” fully - they say “res-pah-tory”. Also, they fail to pronounce the f in fifth - like they say fith. Certain words like “squirrel” tend to get squished into “skwol” while I’m used to pronouncing it in two syllables. I’m trying to think of similar examples.