I am pretty sure most come from same factories and have just different QC. They won't throw away as many items that would have cosmetic issues for example. Hav

I am pretty sure most come from same factories and have just different QC. They won't throw away as many items that would have cosmetic issues for example. Having said that, I know of one example of store brand where the ingredients are usually different: Migros in Switzerland. And what is particular is that they just put less weird stuff on them. For example they would rely less in taste enhancers, food dyes, and all other stuff most of the industry is adding into processed food to make them feel and look better/fresher. And in the end the Migros products regularly stand on top of the list of the healthier variant of a processed product kind when tested in lab by the local consumer report association.