There are a lot of chrome-coated plastic trim pieces on the Genesis, and they scratch very easily. Something like Meguiar's Ultimate Quick Detailer or Eagle One NanoWax Spray are good for that, but be sure to use a microfiber towel to avoid adding any additional scratches. You can also use the same spray to touch-up painted surfaces that have been waxed. I would try and get the same brand as the brand of wax you use.
For chrome wheels (I wasn't aware that any Genesis stock wheels were chrome), there are several chrome
wheel cleaners on the market, which you can find via Google. I would make sure and wax them after they are cleaned, so they will stay clean longer (just like painted surfaces).