Analysis of recognized great leaders

There are many philosophies of leadership as well as promulgated styles and just as many analysis of recognized great leaders and what makes a great leader, but if we cut to the chase it comes down to a very simple truth an analysis; real leaders have one key element, they have “ free willed follower’s. They have followers regardless of their stature/position/power, because they establish trust, which allows them to influence other and if they are influencing others, they are motivating other to do or accept what they want. The question then is how does leadership correlate to innovation?