Sounds like it's once again time to look at the map of US grocery chains. Here's one from ChainStoreAge: https://assets1.chainstoreage.com/images/v/max_width_2600/s3fs-public/2024-01/grocery_2023.png

All the purple states are "Kroger Banner" stores.

Here's a more recent one using k-nearest neighbor analysis to show the "influence" of each store in a region: https://flowingdata.com/wp-content/uploads/2024/09/grocery-store-chains-in-the-US-1090x829.png

Despite being the largest chain outside of Walmart, if you live in Oklahoma, Idaho, the Dakotas, Nevada, or the NE seaboard, you may have grown up having never heard of "Kroger", but maybe you saw their other brands.