Who really created BEWITCHED?

Aloha from Hawaii where the tradewinds are whispering Friday Questions:

Derrick starts us off:

How is it decided who gets credit for creating a series? I was reading a piece about the old sitcom Bewitched awhile back, and while a gentleman named Sol Saks is credited in every episode as creator of the series, I got the impression from the article that nearly half of the guys associated