Glenn:
According to Dan Wexler's "Lost Links" Emmet swung or turned at least one hole left at Meadowbrook Hunt Club, a couple left at Pomonk CC and three left at Old Westbury CC. At the latter the 3rd looks very interesting with optional fairways---the safer play making the hole very much right to left.
One of those latter two my mother described as 'the prettiest golf course' she'd ever seen.
In my opinion, it would make perfect sense if Devie Emmet swung to the left more than any architect because, after all, Devie was the one who invented "Gay" architecture. I think the fact that he didn't swing his holes to the left more than he did just shows that he was partially in the closet during most of his career.