Mines not a walk in but it's got quite large shelves to the ceiling. At the very top I keep my platters and serving dishes etc. Then on another shelf I have all my baking stuff - mixer, flours, sugars, cocoa, all that stuff.
Next shelf is my cereals, bread, rice, pasta, teas, coffee, Milo, spreads.
Then the other shelf has all the oils, condiments, sauces, tins, spices, stock. Also keep my cling film, al foil, etc here too.
At the bottom it's just random, toaster, slow cooker, sandwich press, wine, potatoes and onions.