innovator
A person who introduces new ideas, methods, or products; often used in business, technology, or social contexts.
He is known as an innovator in the industry.
Innovators created new technologies one after another.
先駆者 is a pioneer or forerunner, emphasizing being first in a field, while 革新者 focuses on the act of innovation itself.
Compound of 革新 (innovation) + 者 (person). The word follows a common pattern for agent nouns.