Do many large grocers in the US seem to be regionalized? This mention of "Shoprite" may have given me an idea of the location this poster is from (Eastern Mid-Atlantic region?)
My experience over the past few decades is that the grocery store companies have slowly consolidated from small chains, to regional companies, to national empires, but they keep the original name of the store from 30 years ago to appear “local”.
Yea pretty much every region has its own grocery brand. There's always walmart/target and whole foods/trader joes in urban areas, but then there's a local brand too. We got Jewel in my area.