in my mind, ryb was one of the first demos to really prioritize rollouts as an important skill, could be wrong on that though
trying to remember the first team to run double gunboats soldier, that would've been big too (was it seagull and zbryan? not sure)
and I think b4nny and kaidus were pretty influential in getting 6s players to take jump maps seriously
maybe I'm giving too much credit to the super notable names here but that's what comes to mind first