I live in HEB Country with occasional jaunts to Randalls (Safeway) and Trader Joes.
There are not a lot of options here in central Texas but we do also visit Costco frequently however, I don't consider Costco a "grocery store".
HEB is my main grocery store I shop at too. For quick things I’ll pop into Randall’s or sprouts. Warehouse I prefer Costco but we go to sams club as well.