Obviously of those eligible to have won one (no, Satchel Paige and Bob Feller DO NOT COUNT as I realize they are probably the greatest of the pre 1956 hurlers to have pitched in the majors afterward, without gaining a CY Young award)
In case you are wondering, the following are HOFers, whom fall into this category, and never won the award;
Also in the mix should be perpetual "Why isn't he in the Hall yet" guys;
I believe that's it for the guys that are still on the ballot. I'm surprised Dave Stewart didn't get enough support to belong with that list.
Guys still active today that could deserve consideration for the title;
Okay, Rivera is going into the Hall, but I'd argue about Hoffman's status as a future no doubt HOFer.
Other than those two, no one active who has never won a Cy strikes me as being involved in "should he go into the Hall" debates. Either they are too long in the tooth (Moyer), haven't done enough in their careers (Oswalt), or just had one or two years of "best pitcher in the game" discussions about them (Hudson, Mulder, Pettitte, etc).
All things considered, my top three is Marichal, Rivera and Gossage.