For quick cleanings and light protection I would normally recommend the Chemical Guys Meticulous Matte Detailer (MMD)
. Given your description this may not be enough so I'd recommend something a bit stronger that is still gentle like the P21S Total Auto Wash
. Spray it on the face of the wheel or a microfiber towel and wipe with light pressure it should be able to remove those build ups.
Hope this helps!
Greg @ DI