All the lyrics sites have it under Lionel Richie.
What else did he write?
He was part of the Commodores, along with Lionel Ritchie. People who put the lyrics to Commodores songs under "Lionel Ritchie" are ig'nant ;0)
William King wrote, or co-wrote (where noted) the following Commodores tunes: "Thumpin' Music", "Funky Situation", "Young Girls Are My Weakness" (with Ronald LaPread), "Time" (with Thomas McClary) "I Feel Sanctified" (with the group and Jeffrey Bowen), "You Don't Know That I Know", "Let's Get Started", "Brick House", "Too Hot Ta Trot" (with the group), "Fire Girl" (with Darrell Jones and David Cochrane from the Mean Machine), "You're Special","Mighty Spirit" (with Harold Hudson from the Mean Machine) and "Lady (You Bring Me Up)" (with Shirley King and Harold Hudson)...