Scoundrel (TT inspired class):
NEGOTIATOR: Items cost 5 gold less in shops
LIGHT FOOT: Exploring the area around a monster gives the player first strike
VETERAN: Learning 1, needs 10% less XP to level up
Butcher (Taurog inspired class):
MOMENTUM: Successive killing blows add 15% bonus damage, leveling up or losing momentum halves bonus.
SPELLKILL: +50% starting Magic Resistance.
COURAGEOUS: drinking a Mana potion grants you Might for your next attack.
Ram (Binlor inspired class):
DRAGON TAIL: Starts with 20% Knockback.
SAPPHIRE LOCKS: Naturally poisonous strikes, petrifies enemies, starts with ENDISWAL glyph
MAGESLAY: Activated glyphs cost 2 more mana to cast (Except ENDISWAL or PISORF), but starts with 20% attack bonus.
Chaos Knight (Jehora inspired class):
EVASIVE: Starts with 20% Dodge.
SCARRED: Immune to Poison, Mana Burn, and Curses.
SURVIVOR: Potions restore both Health AND Mana.
Druid (Earthmother inspired class):
ESSENCE TRANSIT: Every mana point spent regenerates 2 health
HOLY HANDS: Starts the dungeon session with the HALPMEH glyph
DRAGON BREATH: Magic attack
Inquisitor (Glowing Guardian inspired class):
GOOD GOLLY: +100% attack against undead.
HOLY SHIELD: +25% starting Physical resistance.
SPIRIT SWORD: Hitting the conversion threshold drains mana and temporarily increases base damage (5+mana drained)
Devout (Pactmaker inspired class):
MARTYR: Extra altar in dungeon, which is guaranteed to be the Pactmaker.
HOLY WORK: Cannot switch religions, god boons cost 20% less and gods will not punish for piety dropping to 0
ARCANE KNOWLEDGE: +5 maximum mana
EDIT: Added the rest.