Golden Age (1930s-1950s):
* Jerry Siegel and Joe Shuster: Creators of Superman
* Bill Finger: Co-creator of Batman
* Bob Kane: Co-creator of Batman
* Stan Lee: Co-creator of Spider-Man, Fantastic Four, and the X-Men (though he often shared credit with others)
Silver Age (1950s-1970s):
* Stan Lee: Co-creator of many Marvel heroes
* Jack Kirby: Co-creator of many Marvel heroes with Stan Lee
* Steve Ditko: Co-creator of Spider-Man and Dr. Strange
* Gardner Fox: Writer of numerous DC comics, including the first Green Lantern
Bronze Age (1970s-1980s):
* Alan Moore: Creator of Watchmen and V for Vendetta
* Frank Miller: Creator of The Dark Knight Returns and Sin City
* Neil Gaiman: Creator of The Sandman and numerous other comics
* Chris Claremont: Writer of X-Men for 17 years, shaping the franchise's popularity
Modern Age (1980s-Present):
* Grant Morrison: Writer of Animal Man, The Invisibles, and Batman
* Brian K. Vaughan: Creator of Y: The Last Man and Saga
* Mark Millar: Creator of Kick-Ass and Civil War
* Jeff Lemire: Writer of Sweet Tooth and Black Hammer
Others to consider:
* Art Spiegelman: Author of Maus, a graphic novel about the Holocaust
* Will Eisner: Creator of The Spirit, influential in graphic novel development
Ultimately, the "most famous" comic writer depends on your individual preferences and interests. Each writer has left their mark on the industry in their own unique way, contributing to the rich history and diversity of comic books.