I use any cleaner wax successfully. The cleaners chemically remove contaminants without damaging the fragile chrome finish, and the wax protects and brightens the chrome.
You mean like the chrome used on logos and grilles? I've never had a problem using regular polishes, but I would avoid any polish that has a noticable grittiness to it.
I don't use anything more abrasive than AIO/VM and I really only use AIO if I'm topping with SG. Since you can't really "abrasively polish" the chrome coating, I too prefer chemical cleaners.