In one sense, yes. In another, though, most great artistic works draw inspiration from other earlier works, and so are arguably not a "creation" by a single human; more like an evolution, a synthesis, a derivation, a continuation...

Would Shakespeare have written Romeo and Juliet if there hadn't previously been Pyramus and Thisbe, or many other sources?

https://en.wikipedia.org/wiki/Romeo_and_Juliet#Sources