Best Korean sunscreens that do not leave white cast on dark skin?

I have medium-dark skin and every sunscreen I have tried leaves a terrible white cast. I have heard that Korean sunscreens are lightweight and cosmetically elegant. Can anyone recommend Korean sunscreens that work well on darker skin tones without leaving a white or gray cast? I need at least SPF 50 for daily use. I also prefer something that works well under makeup. Chemical sunscreens are fine with me. I have seen brands like Isntree, Beauty of Joseon, and Round Lab recommended - has anyone with darker skin tried these?