Denny Hartford thought he'd pretty much completed his personal "Mystery Writers Honor Roll" after reading in the genre as long as he had. But then...
Looking at his original list, I find we have a lot of well-liked authors in common. He does list one author I don't like at all, and a couple I'm not familiar with, but otherwise I find myself very much at home.
If you were making your own list, is there an author you'd have that he doesn't? He does use a very broad definition of "mysteries" - which works for me. I'd possibly add Manning Coles, I think, even though they're mostly espionage books. I'd probably add Margery Allingham. And I'd definitely add Rex Stout.