@334bu @lydiarose and others asking about brands...
In terms of what I pick when I am packing a foodbank parcel a tin to beans is a tin of beans. If I have a crate full of beans to pick from then yes it feels better than half a crate of fancier beans...
HOWEVER
From a clients point of view you have to think what would you think if there is a little bit of luxury in that food parcel you didn't have the money to pay for. Some clients won't care - its all food. Others that little special something means the world.
Sometimes it depends on how busy we are. If I'm alone in the packing room - as I have been through covid as the room is small - and I have a high number of parcels to pack I grab whatever is nearest from each of the crates and get it out. If however I have more time then I might look more closely to ensure each bag contains something "Special". I will ensure that our homeless guys get ring pull tins, that our larger families get 3 tins of the same favour soup so it can be heated on 1 ring together etc... it all depends on the day.
Whilst that doesn't answer the question directly... I would say buy what you buy for your family/household. That way the store room reflects the folks of the area. The only potential exception to this is when you are responding to a direct shout from the bank where they post on Facebook etc... "bring us beans" in which case quantity is great!
One thing I would say though is to usually avoid big packs of anything. Sometimes big pasta/rice bags works for large families but mostly they sit for ages as we are not allowed to split them. small jars of coffee, smaller boxes of tea, etc. 50% of our clients are single people...