Aluminum is VERY different than chrome. There are "All-Metal" polishes out there that kind of blur the line or understanding of what a "metal" polish is.
I do think that Mother`s makes some very fine metal-specific polishes and their cone and ball foam pads designed for cordless drills make polishing easier and with good results.
For true aluminum rims, I would suggest Mother`s Billet Polish.
For aluminum diamond tread plate and pontoon boat floats, I would suggest White Diamond Polish. I just saw this at Walmart, of all places!
For TRUE chrome rims (NOT clear-coated chrome, and yes, that is VERY common these days), I would suggest Mother`s Chrome Polish.
HOWEVER, after going to a car show recently, many owners of custom chrome rims prefer Eagle One Never Dull "wipes" in the can.
(never used them myself)
For chrome trim, I like Optimum`s Metal Polish or Simichrome.
For chrome bumpers, I have an old pre-VOC legislation bottle of Turtle Wax Chrome Cleaner that works wonders on rust and bugs.
For rust on chrome I have also used Meg`s M105 Compound that also works BY HAND and is a good way to use that compound that dust so badly when machine applied. Works really good on chrome runnning boards on trucks or SUVs.
The microfiber cloth you use for wipe-off makes a huge difference. If it is not absorbent enough, all you will do is "smear" the polish and it looks it too, especially on chrome. I see The Rag Company makes some metal polishing-specific microfibers, but I have not tried them. And yes, on aluminum and stainless steel ANY cloth you use will get black (which is WHY the ones from The Rag Company are black in color).
One other caveat about chrome is that some trim pieces are plastic that have a very thin chrome "film". GM grills are notorious for this and it is easy to over-rub and cause this film to flake off. Most interior pieces are the same way. I like MAAS or Simichrome on them because they are mild abrasive polishes. For narrow chrome interior trim (like gauge bezels rings, ventilation vents, dashboard accent trim, and rocker switches or control knobs), I use a cotton swab (AKA Q-Tip) for application and removal. Shiny interior chrome REALLY shows off in an interior.
And on exterior chrome or polished/brushed stainless steel trim, ALWAYS tape that off when you use a compound with a buffer machine. It is SOOOOO easy to seriously scratch and ruin that trim with a buffer and compound. (Been there, done that. Live and learn so you do not have to.)