I suppose everyone sets the bar for iconicship (perhaps not a word) at a different level. Gwreck has it very high, only Tom Seaver meets the standard. Merriam-Webster says: Seaver, the guy with the statue, certainly qualifies. I think you can make a reasonable argument against everyone else. The step below "icon" is probably "legend". Here's the definition: Okay, that's not particularly helpful. Let's reference definition a. Mike Piazza, with his September 2001 home run, is a legend. Mookie Wilson, October 25, 1986. Legend. Robin Ventura and his Grand Slam Single. And it doesn't have to be particular moments. Casey Stengel and Gil Hodges have been dead for more than a half century and they're still part of Mets lore. Koosman, Darryl, Keith, Doc, Alfonzo, Alonso, deGrom. All legends. I think I'm with Gwreck. Seaver's an icon. Many others are legends. And that's still a significant thing.