My DH grew up with no name everything in his house, so he is insistent that most things are branded, at least what he eats. That makes a high grocery bill for us

So our brands are:
Heinz beans, ketchup, salad cream, diet coke etc...
By the way, I read about this before to save money, here's a strategy I tried while single:
Buy 1 or 2 store brand items a week and try them out. If you they are good, then stick with buying that to save money, if not, at least you haven't changed everything at once and are stuck with food you dislike for a week or more. I still buy some store brand things, such as bathroom cleaner, shower spray, fruit smoothies, frozen veg, concentrated juices...