We're a mix of cook from scratch and some convenience/frozen food. We eat a lot of fresh fruit and veg so I tend not to expect to get it all in one big shop to last a week. I have a few supermarkets quite close to home or on the way home from work so it's not a faff to pick up branded items elsewhere.
Scratch: Aldi have a good selection of tinned beans, also chopped tomatoes, pasatta. Good range of veg, some organic, also fruit which I definitely find cheaper than other supermarkets, particularly berries. The Super 6 or whatever it's called often needs using quickly but the other fruit and veg lasts for the time we need it.
Mine has quinoa, lentils, couscous although I think availability of some items might depend on your store and I think my local one must be a good one!
Convenience/frozen: Fishcakes, stir fry, bagged salad, little salad pots, falafels, filled pasta, fresh or frozen pizza, frozen veg/rice mixes, veggie burgers, bake at home bread rolls.
Other: A lot of their yogurts are nice, feta, buffalo mozzarella, halloumi, Brie, Smoked cheddar (but not their normal cheddar
), not-from-concentrate orange and apple juice, smoothies, sushi, various nuts and last but not least wine
.