I've been in a refuge where the items have been brought in and people choose items (all over seen by staff so no one takes the micky)
Things that typically go first are snacks, biscuits, chocolate, sweets, pasta, tuna, pasta sauces, microwave pasta/rice pouches, fruit juices, squash/diluting juice, chopped tomatoes, shampoos, body wash, soaps, beans, tinned fruit
Things that are usually left over are corned beef/spam, unusual soups, tinned stew, tinned chilli/curries, butter beans, black beans, most tinned meat.
But it really does depend on what people eat and like.