Ford uses different suppliers to make it's wheels.Companies like KONIG,and BBS also use suppliers to make their wheels.Making wheels is too big a process for these guys to make them on the own.Ford uses Weasley Wheel in the U.K. to manufacture some of their wheels.On the ST-200 wheels I have,there isn't a make on the wheel that I can see.
In the U.S.A. JII,Western Wheel and a few othres are wheel suppliers.