I Heard It Through the Grapevine
Gladys Knight & the Pips, Marvin Gaye, The Temptations, The Miracles, Undisputed Truth, Bobby Taylor & the Vancouvers

Most Norman Whitfield songs had at least three covers

Who's Loving You?
The Miracles, The Supremes, The Temptations, Brenda Holloway, Jackson 5, etc.[[?)