I would check out the new MUFE uplights if you're looking for a cream based luminzer. They dry nicely so you shouldn't have any oily feel afterwards. If you want powder I stand by the Dior Shimmer Star.
Clinique Up-Lighting Liquid Illuminator in Bronze is beautiful on dark skin tones. It's my favorite illuminator out there but they don't sell it at Sephora anymore. I know you can get it at Bloomingdale's, Nordstrom and Macy's.