bellwether, Mahdi, ancestor, announcer, antecedent, avant-garde, bell cow, bell mare, born leader, buccinator, bushwhacker, charismatic leader, choirmaster...
This is <span class="searchmatch">Moby</span> <span class="searchmatch">Thesaurus</span> <span class="searchmatch">II</span>, a public domain <span class="searchmatch">thesaurus</span>....