When it comes to predicting who will succeed Pope Francis, expect the unexpected. Since the Catholic Church began selecting popes in a highly secretive conclave, rarely have the rumoured front-runners prevailed. Popes John XXIII, John Paul II and Francis were once considered long shots. This year is also the most diverse conclave in history, with the 133 cardinal-electors representing 72 different countries. Cardinals from across the globe have flocked to Rome to vote in the conclave. (AP: Gregorio Borgia) There are many cardinals known as "papabile", meaning they possess qualities considered necessary to be pope. But each has their own…