It’s difficult to think of an organisation more representative of mainstream Catholicism than the Knights of Columbus. Called the “strong right arm of the Church” by St Pope John Paul II for its charitable efforts, the Knights were actually founded in part as an alternative to Freemasonry. The Knights are perhaps better known in America for their life insurance wing, however: they hold more than $100 billion worth of contracts, placing them at number 878 on Fortune’s ranking of the world’s largest companies.