I've done a little reverse engineering, but it's often hard to tell what could be coming from racial bonuses. Also, I'm pretty sure we have no idea how weapon proficiency really works.
That said:
Fighter
Key ability: STR
Armor Training: at least Scale
Weapon prof: at least Handaxe, maybe Warhammer (could be dwarven)
Defense bonus: +2 Fort, (+2 Ref is probably from shield)
HP at 1st lev: 15 + Con score
Healing surges: 9 + Con mod
Class skills: at least Endurance, Heal, and Streetwise
Build options: maybe none other than power selection?
Class features: Combat challenge, Combat superiority
Paladin
Key Ability: CHA, maybe WIS?
Armor Training: at least Plate
Weapon prof: at least Short-sword (throwing hammer seems to have a lower bonus?)
Defense bonus: at least +2 Will (probably +2 Ref is from shield and +1 All from racial)
HP at 1st lev: 15 + Con score
Healing surges: 10 + Con mod
Class skills: at least Diplomacy (could be racial?), Heal, Insight, Religion
Build options: choice of patron god might affect Channel Divinity features?
Class features: Divine Challenge, Lay on Hands, Channel Divinity: Divine Strength, Channel Divinity: Divine Mettle
Cleric
Key Ability: WIS
Armor Training: at least Chainmail
Weapon prof: at least Dagger (mace has a lower bonus?)
Defense bonus: at least +2 Will (+1 All from racial?)
HP at 1st lev: 12 + Con score
Healing surges: 7 + Con mod
Class skills: at least Arcana, Heal, History (bonus human?), Insight, Religion
Build options: choice of patron god might affect all of the features (other than Ritual casting)?
Class features: Ritual Casting, Turn Undead, Healing Word, Channel Divinity: Divine Fortune
The example Cleric has 3 at-will powers instead of the normal 2!
Ranger
Key Ability: DEX
Armor Training: at least Hide
Weapon prof: at least Longbow, Longsword (may be racial)
Defense bonus: +1 All (slightly odd?)
HP at 1st lev: 12 + Con score
Healing surges: 6 + Con mod
Class skills: at least Acrobatics, Athletics, History (racial?), Nature, Perception, Stealth
Build options: choose a special feat???
Class features: none? but has an extra feat (Lethal Hunter) that gives Hunter's Quarry
Warlock
Key Ability: CHA
Armor Training: at least Leather
Weapon prof: at least Dagger
Defense bonus: +1 Will, +1 Ref
HP at 1st lev: 12 + Con score
Healing surges: 6 + Con mod
Class Skills: at least Bluff, Insight, Streetwise, Thievery
Build options: pact choice
Class features: Fey Pact, Prime Shot, Shadow Walk, Warlock's Curse
The example Warlock has an extra at-will power from the Wizard list, and doesn't seem to have taken a feat to gain it!
Wizard
Key Ability: INT
Armor Training: none?
Weapon prof: at least Dagger
Defense bonus: +2 Will
HP at 1st lev: 10 + Con score
Healing surges: 6 + Con mod
Class Skills: at least Arcana, History, Nature
Build options: implement choice?
Class Features: Arcane Implement Mastery (wand), Cantrips, Ritual Casting, Spellbook