As distinguished from the shorter, more restrictive Protestant Bible, the Catholic Canon is hierarchized into "protocanonical" works (that is, works of the "first" or highest inspiration, the synoptic Gospels for instance) and "deuterocanonical" (that is, works previously contested but finally accepted as inspired, such as the Apocalypse).
Assuming slow expansion within a hierarchized literary system, one might think that works of African-American, Native-American, and other non-traditional literatures can still become "canonized," though only within a hierarchical arrangement that, as Bloom would have it, necessarily keeps Shakespeare "first" (or "protocanonical"), Dante "second," Dickinson "twelfth," and so on.