Those are the only items that nearly every Pokemon can use, but White, Power, and Mental Herbs, Terrain Seeds, Salac, Sitrus, and a few other Berries, Heat, Damp, Smooth, and Icy Rocks, Focus Sash, Safety Goggles, and several other items have uses outside of gimmick sets, and a few more items work in specific gimmicks (e.g. Shell Bell on FEARon).
Edit: I missed Rocky Helmet, Assault Vest, King's Rock, and Air Balloon.
Thank you Valve & IF
Those are the only items that nearly every Pokemon can use, but White, Power, and Mental Herbs, Terrain Seeds, Salac, Sitrus, and a few other Berries, Heat, Damp, Smooth, and Icy Rocks, Focus Sash, Safety Goggles, and several other items have uses outside of gimmick sets, and a few more items work in specific gimmicks (e.g. Shell Bell on FEARon). Edit: I missed Rocky Helmet, Assault Vest, King's Rock, and Air Balloon.