What Do We Know About the Portal Spell Ingredients on 'Supernatural'?

Supernatural set up the endgame of season 13 by revealing the ingredients for the spell that Sam and Dean can use to open a portal to Apocalypse World so they can rescue Mary and Jack. This is a time-honored formula for the series, whether it's about breaking the seals to release Lucifer, completing the trials to close the Gates of Hell or collecting the ingredients for a spell to remove the Mark of Cain. The Winchesters always seem to have a scavenger hunt-style quest to achieve their goal.