In my area the family delis (which were everywhere 30 years ago) are dying, so sandwiches either come from a chain or the pre-made garbage in supermarkets and convenience stores. A lot of it is demographic; the Americans are disappearing, and the replacements have their own “sandwiches” (empanadas, tacos).
The family pizzerias are hanging on, despite the competition of the chain stores which have sprung up everywhere here; the difference in quality and taste is incredible. I live near the pizzeria featured in the “Sopranos” intro; it now has Egyptian owners (but kept all the mob paraphernalia as the décor).
Down here, we’ve had some of the family deli type places open up, which I like as it was difficult to get a good pastrami sandwich for a while there. Perhaps they just moved down here from up there?
Down here, Hispanics have always been a part of Texas, so it’s not like Hispanic foods weren’t a thing from day one. We have restaurants that serve tacos and fajitas off the same menu that includes burgers, subs and pizza, and all of it is at least acceptable.
There’s a semi-famous diner in the DFW area that dates back to the 1950s and is more or less still original. It’s gone through several owners, but not much changes. Current owner is (if I recall correctly) an Iranian Christian who GTFO of that country after the fall of the Shah. Nice guy, refuses to open Sundays.