As others have said, it's more of a crediting thing than the actuality. Brandon Sanderson, a modern fantasy author, is famous for having an entire corporation

As others have said, it's more of a crediting thing than the actuality. Brandon Sanderson, a modern fantasy author, is famous for having an entire corporation of editors, storyboarders, and researchers. But only his name goes on the book. I've studied Shakespeare a fair bit, his plays were certainly not written truly solo. But as the lead creative, alongside with humanity's love of hero worship, only his name stood the test of time.