This question just popped into my head. Who are the great living American directors no one knows about?

Here are the usual suspects of great American directors, in no order: Spielberg; Scorsese; the Coens; Soderbergh; Fincher; the Andersons—Wes and P.T; Allen; Cameron (arguably); Eastwood; James Gray; there ought to be a woman on this list but I can't think of one.

So who's missing? Whose work do most Americans not know?