Pioneers innovate in a particular field, i.e. "Mr. Smith is a pioneer in the teaching profession...", first recorded in 1780s.
People that are often called innovators include:
Serial Innovators: How Individuals Create and Deliver Breakthrough Innovations in Mature Firms: Benefiting from the Unique Abilities of Serial Innovators Requires Not Only Recognizing Them, but Developing and Managing Them in Very Particular Ways
Nov 01, 2012; Over the past decade, we have had the privilege to interview, study, and collaborate with a set of powerful and capable...