influential

cogent, controlling, dominating, masterful

dominant, predominant, regnant, sovereign (also sovran), supreme

eminent, important, momentous

high-level, senior, top

able, capable, competent, effective, efficient

celebrated, distinguished, dominant, eminent, famed, famous, great, illustrious, noble, notable, noteworthy, notorious, outstanding, preeminent, prestigious, prominent, renowned

dynamic, energetic, forceful, high-powered, robust, vigorous