Hitchcock could very well be the director whose output I’ve seen more than anyone else’s. Impossible to say, of course, but the thought did occur to me.
I’d also have to name too many favorites for it to be meaningful, so let’s just say the 1950-1963 streak closely followed by the mid-1930s through early 1940s streak. And that’s a fair amount of streaking.
Least favorites: Under Capricorn and Mr. and Mrs. Smith come to mind, and I think there are a few other such valiant but failed efforts scattered about.