Just missing our list is Richard Garfield, Ph.D., which is likely a popular choice for people going to an event and hoping to get a signature from Richard Garfield himself
It looks like heavy blue decks need to rely on big spells like Treasure Cruise and Hour of Eternity to massively outvalue the opponent, while in less dedicated decks, blue will play a supporting role by smoothing out draws with scry, card draw, and flexible bounce
The cards from AFR that are worth money are listed in descending order
Honorable Mentions There are a few mono-colored hybrid cards that have hybrid mana in their abilities
Kuja, Genome Sorcerer / Trance Kuja, Fate Defied Strangely enough, I rather think Kuja, Genome Sorcerer is the better half of this double-faced card