I'm a former musician and follow music. Although I stopped playing in bands in my twenties, I have musician friends who still play in their sixties. There are quite a few singers who started out writing songs for others before cashing in on their song-writing talent by singing their own songs. I've gone to Neil Sedaka concerts right at stage-front, he too wrote many hit songs for others (hundreds). Others are Elton John, John Lennon and Paul McCartney, Paula Abdul (mainly choreography but songs also), etc.. I rate Prince up there with the top artists for song-writing talent.
Thank for the mention. I was aware of the others, but never saw Prince in quite that light, so I learned something. I will admit, you don’t appear to be the only one in awe of his skills.