Gardner Fox (Yes, the guy who created the Silver Age Flash) wrote several stories and books in the genre. Niall of the Far Travels, featured in some early Dragon magazines (I could have sworn these were collected at some time, but if they were I can find no record of it), his Kyrik and Kothar novels; He also wrote some 'Sword and Planet' books in the vein of ERB: Warrior Of Llarn and Thief Of Llarn.
Lin Carter did write S&S Conan pachistes along with the Thongor & the Godwane books, among others. His main contribution was the Ballentine Adult Fantasy Series that kickstarted much of the modern interest in fantasy along with the 60's Tolkien revivial. That imprint reprinted a lot of early fantasy that would have been lost to us otherwise.
Carter also edited the Flashing Swords anthology: Flashing Swords, Flashing Swords #2, Flashing Swords #3: Warriors & Wizards, Flashing Swords #4: Barbarians & Black Magicians, Flashing Swords #5: Demons & Daggers.
Roland Green: The Wandor series
The Worm Ouroboros by E. R. Eddidson
Tanith Lee's Birthgrave series.
John Jakes' Brak the barbarian. Yes, it's as wretched as you can imagine.
Offut's 5-volume Swords Against Darkness series. Out of that come a few series, most notably Charles Saunders three Imaro the Warrior novels, the only African-themed S&S I'm aware of (Imaro, The Quest for Kush and The Trail of Bohu).
Andrew J. Offutt's Cormac series -- The Sword of the Gael, The Undying Wizard, Sign of the Moonbow, The Mists of Doom, When Death Birds Fly, and The Tower of Death
Jirel of Joiry, by C L Moore; one of the first and finest female sword and sorcery series.
Jessica Amanda Salmonson's anthologies Amazons! and Heroic visions (2 volumes each)
Henry Kuttner's Elak of Atlantis