Consider trendsetting, after trendsetter, “someone who starts a trend, or makes one more popular”, and early adopting, after early adopter. Per wikipedia,
An early adopter or lighthouse customer is an early customer of a given company, product, or technology; in politics, fashion, art, and other fields, this person would be referred to as a trendsetter. The term originates from Everett M. Rogers' Diffusion of Innovations (1962).
Note, an innovator is “someone who innovates; a creator of new ideas”. Innovators typically get on the bandwagon before early adopters / lighthouse customers / trendsetters, and indeed often create the things that others later pick up on.