I don't know for sure, the most important in reality will probably be metasediment deposits formed by banded iron formations. The origin is not reliably resolved.
Contact metamorphic Skarn ore deposits are another important type, although they can also be considered hydrothermal deposits. Famous examples are Sarbai, Kazakhstan (Fe, Co, Au: 725 million tons estimated reserves) or Twin Butts (Cu, Mo, W, Zn: 500 million tons estimated reserves).