Creators & Innovators
Intellectual property protects the result of the creators' or innovators' own intellectual effort, which are not commonplace among creators or innovators at the time of their creation or innovation.
People having the possibility of preventing information lawfully within their control from being disclosed are simply referred to as "persons". In copyright, the rights are granted to "authors" in their literary and artistic works. The other copyright beneficiaries are "producers of phonograms, broadcasting organisations and performers."
In the industrial field of designs, the creators are called "designers". For creators of layout-design (topography) of integrated circuits, they are referred to as "right holders". In the field of patents, innovators are "inventors." For new plant varieties, the rights are granted to plant "breeders".
For trademarks, the owners are called "proprietors". For geographical indications, the legal means are meant for "interested persons". For persons or companies registering domain names, they are "registrants.
As between creators and innovators, I think they can be distinguished by the anticipated impact that the result of the intellectual effort will make. The different legal terms of protection speak themselves. For copyright, the general term is life of the author plus 50 years, and for patents 20 years.