So the list of codex mobs are below. Alexander Aeolus Black has by far made the most comprehensive information sheet on codex I have seen so I will link to his google sheet. It is amazing. Take a look at it here. In reference to the different skills sets these are here:
Set 1
Aim
Anatomy
Athletics
BLP Weaponry Technology
Combat Reflexes
Dexterity
Handgun
Heavy Mele Weapons
Laser Weaponry Technology
Light Melee Weapons
Longblades
Power Fist
Rifle
Shortblades
Weapons Handling
Set 2
Clubs
Courage
Cryogenics
Diagnosis
Electrokinesis
Inflict Melee Damage
Inflict Ranged Damage
Melee Combat
Perception
Plasma Weaponry Technology
Pyrokinesis
Set 3
Alertness
Bioregenesis
Bravado
Concentration
Dodge
Evade
First Aid
Telepathy
Translocation
Vehicle Repairing
Set 4
| Pleak | Duster Gang | Renegade Hazard Mech |
| Arret | Stalker Bot | Sky Wraith |
| Dire Weed | Imperium Pilot | Tide Claw |
| Empis Wasp | Living Storm | Drill Bot |
| Hackfin | Whisker Fish | Paneleon |
| Merfolken | 5P1D3R-B0t | Tree Dragon |
| Crystal Pede | Venataur | Zeladoth |
| Jellyworm | Imperium Soldier | Muckjaw |
| Scout Bot | Flesh Ripper | Fenris |
| Sea Wraith | Protocore | Rhino Beetle |
| Swamp Lurker | Skyshatter Robot | Wiles |
| Undersea Folken | Crystal Golem | Mecha Lupine |
| Lazidol | Mang Chang | Nimet |
| Horned Bird | Vlanwing | Zyn'Dos |
| Skull Bird | Skreel |