Back in the day I resorted vintage bikes and reconditioned modern bikes. yhe only product I ever used to de-rust chrome was Naval Jelly. It works extremely well. I worked the product in with a tooth brush then let set. After rinsing it off I preserved the surface with car wax.

As far as polishes for oxidizable metals....I always had the best results wit Happich simichrome. Recently I've tried Mother's Billet metal polish. Its expensive at $14 for a 4oz. container. that may be less than simichrome but it works better.

sample pic....