Okay, here's my post on them from the first page deciphered.
Moon: Well that's obviously the Lunar Codex.
Eye: Again, obvious. The All-seeing Eye Codex.
Cross: Angelic Codex.
Bat: Vampire Codex.
Water Drop: Water Codex.
666: Devil Codex. Though it may be something else.
Lightning Bolt: Lightning Codex.
Hourglass: Time Codex.
Hexagram: Ritual Codex. Though a Suleiman Codex would be pretty cool.
Tree: Floral Codex.
Ghost: Poltergeist Codex.
Insect: Insectoid Codex.
Bull Head: Beast Codex.
Now, this was all thought out when only the first chapter was out. Now, I can see some other ones I can guess at.