We all know that Pamida is very similar to Pamida, except that some of them also have pharmacies. Alco is usually better operated. Both have a midwestern presence while Alco goes a little further into the Mid-South and Southwest.

Fred's in the south is more of a dollar store.
http://www.fredsinc.com

A few years ago I heard of Rose's in the south which is similar but has been downgrading into more a dollar store. They are now part of a family of companies.
http://www.vwstores.com/

I also have known about Kings which recently upgraded their website.
https://www.kingsdiscount.com/

Today I learned of Magic Mart another southern company.
http://www.magicmartstores.com

Are there any other similar stores that you know of?