I’d say only 60–70% are Aldi/Lidl like (e.g. Netto, Penny, Norma).
Rewe is somewhat different. Edeka is quite different. And the ones in Kaufhof, Karstadt etc are different too. Real and Kaufland look like Walmart Supercenter grocery stores.
If you don’t like the Aldi format, try Edeka. Better and larger selection. Better service too.
Walmart Germany went bankrupt. Poor American management without the slightest interest in cultural differences.