It is difficult to think of a more impossible task than attempting to rate the 60 all-time greatest Motown songs. Founded in 1959 by Berry Gordy, not only has the label — originally a small independent out of Detroit — spawned more classics in the 60 years since its launch than many corporate-giant-owned major record companies, who’s to say whether the Jackson 5’s “I Want You Back” is “better” than such drastically different songs as Marvin Gaye’s “Mercy Mercy Me,” Stevie Wonder’s “Sir Duke,” the Temptations’ “Just My Imagination,” the Commodores’ “Brick House” or Motown-affiliated Migos’ “Bad and Boujee”? Despite...