No Fresh Market or Wegmans 

I'm fairly sure Krogers owns sprouts, or that's what I've read. At least the Albertsons Safeway merger is off the table, yet as of this morning Albertsons is now suing Krogers corp for "Not doing more to make it work." If they merged that would be essentially a monopoly.
Oddly enough Albertsons especially disappeared in Colorado ten years ago or so. I'm still baffled how they bought out Safeway.Sprouts is an independent, publicly traded company.
https://www.nasdaq.com/market-activity/stocks/sfm
Someone mentioned Publix, which I recall is also independent, but family owned.
Albertsons bought Safeway Stores (which owned several brands like Vons) a while ago but I believe they basically incorporated the Safeway house brands into Albertsons.
As far as Kroger goes, I do remember seeing their house brands at QFC stores in the Pacific Northwest. I think they own Fred Meyer stores too. Around here they own some no-frills supermarkets like Foods Co.
There can be some oddities too, like shared house brands. There's a brand called Sunnyside Farms, along with a few others. It's a partnership between Save-Mart Stores and Raley's that includes a dairy.
Oddly enough Albertsons especially disappeared in Colorado ten years ago or so. I'm still baffled how they bought out Safeway.
Same for us - other than a couple places to buy meat ...HEB is The Supermarket in Texas, with no stores in any other state. Here in Sunny San Antonio they've driven out all competition except Walmart and Target. We only happen to buy staples at Walmart when we go there for a specific item HEB doesn't carry.
HEB has their own factories in San Antonio to directly manufacture HEB brand groceries distributed in their stores throughout the state.Never been to HEB, but I bet its good because its local. When Harris Teeter was "local" before Kroger bought them, they were much better. When I go to Publix when on vacation in Florida there also very good - the local ones are terrible.
Grocery stores seem to be something that needs to be local?
HEB is very active in helping others too. When the river left the banks near us - I happened to be in town to see highway patrol units flashing and leading something. I stopped to watch.Never been to HEB, but I bet its good because its local. When Harris Teeter was "local" before Kroger bought them, they were much better. When I go to Publix when on vacation in Florida there also very good - the local ones are terrible.
Grocery stores seem to be something that needs to be local?
Market Basket dominates stop and shop in MA. It’s fiercely independently and owned by a family who has had infighting.I shop at Lidl and Food Lion. I looked up Food Lion thinking they were a local chain. Turns out they’re owned by a company in the Netherlands who also own Hannafords, Giant and Stop & Shop grocery chains here in the US.
Here’s a map I found online on dominant grocery store chains in each state.
View attachment 253785
This is from ~5 years ago so it's no doubt out of date now@Pablo post the infographic for the food manufacturers, too, to blow peoples' minds.
I did a Google search and it turns out to be 184 in Illinois. It seems to be very heavy in Chicago land area. I don't really know how things are in Chicago land. Is there a rule preventing Walmart from having grocery sales or something in the Chicago land area? Because it just seems hard to believe that Jewel osco would truly be the number one for the whole state being that so many communities throughout the state don't even have a jewel osco But their own regional chains, other national chains dominating that area, and Walmart. This is why I don't have trouble believing Walmart winning in Missouri since St Louis has dierbergs and schnucks, Kansas City area has Price chopper and Hy-Vee. Considering how widespread Kroger is in Ohio, I have no trouble believing it has dominating the Ohio market.I don't have time to search, but there has to be more than 20 in IL. There are 16 within 10 miles of my house according to their store locator.
I think you nailed it in your question - Chicago is the elephant in the room for Illinois. Most of the population in the state is in or around Cook County, and that drives things like grocery stores and the state voting democrat in every election even though most of the state is red. And I'm not going to take that last part any farther...I did a Google search and it turns out to be 184 in Illinois. It seems to be very heavy in Chicago land area. I don't really know how things are in Chicago land. Is there a rule preventing Walmart from having grocery sales or something in the Chicago land area? Because it just seems hard to believe that Jewel osco would truly be the number one for the whole state being that so many communities throughout the state don't even have a jewel osco But their own regional chains, other national chains dominating that area, and Walmart. This is why I don't have trouble believing Walmart winning in Missouri since St Louis has dierbergs and schnucks, Kansas City area has Price chopper and Hy-Vee. Considering how widespread Kroger is in Ohio, I have no trouble believing it has dominating the Ohio market.