The lists of the cat or grenade patterns only contain patterns where the grenade/cat is clearly visible on the front half of the gun, and the list containing both will have half on the front, and half of the back.
Generally they are preferred toward the middle of the weapon. This happens in many variants but is still desired a good amount more than one without them.
The AWP Paw is almost guaranteed to have either a golden cat or grenade on the weapon.
