Canon was named for the contents of the labyrinth below its city. This labyrinth, accessible only through guarded tunnels in the Grand Cathedral, are said to contain the Holy Writings of The Light. It is these writings that teach how all the aspects of the world, from life, to storms, to even death, are part of the Divine Plan.
Members of all walks of life make their homes in Canon, but devotees of the Divine Plan (including clerics and paladins) are common in Canon. What is uncommon is practitioners of arcane magic. While druids are tolerated (as nature is part of the Divine Plan), arcane magic is viewed as socially deviant. It isn’t illegal, per se, but practitioners are shunned. This includes monks, who use the magic of ki (although the Order of the Shadow operates in the background here.)
Humans in Canon tend to be dark skinned, with dark, tightly curled hair. Canon is a benevolent theocracy, and treats its people well, providing free access to divine healing. Only those in the High Council are given access to the labryinth, which is said to house the scripts of the Divine Plan.