To me, Prince hands down. All of his music he wrote his own. He played his own instruments. He self-taught himself which shows he was a prodigy. He protected his property and fought the vultures in the music industry, while others sold out for an extra buck.
You can't pin him down in any genre. He was rock, New Wave, pop, funk. Just an outstanding musician.
Michael Jackson was nothing without Quincy Jones producing his records.
If anybody wonders whether the guy was talented...Google ‘Prince’ ‘guitar solos’ that guy could really play. He does a great solo of my guitar gently weeps