I have customers ask me all of the time about what metal finishes they should use for their light fixtures.
In a panic they mention that they have stainless steel appliances in their kitchen and if they match the all of the metals they will need to install stainless steel pendants over their island… but then their kitchen opens up to their living and dining rooms so now they will need a stainless steel chandelier and ceiling fan… they don’t even like stainless steel!!
Relax. Some of the most beautiful designer rooms have mismatching metals and you don’t even notice.

The same goes for other areas of the home. Don't hesitate to mix metals... just make sure that if you use a different finish once to use it again so it doesn't look out of place.