how exactly do you think the Predator hierarchy works? From the films it becomes apperent that there is some sort of social structure, beyond that is left to be derived by the fans.
In P2 we saw the inside of the ship and a whole clan of preds, one who seemed to stand out as the leader or 'elder', then in AvP the same thing, clearly some sort of authority figure here. Also in AvP the Preds were taking some sort of trial against the aliens, implying that they were passing a test to move up in the ranks.
My theory is as follows-
-Elders -the leaders of the clans, oldest and/or most battle proven of the preds
-Warriors - Preds that have proven themselfs at a young age to be above the rest through hunts and survived the ritual (ie: preds that survived the test observed in AvP. They were adorned with numerous trophys, including human sculls, indicating the have had many successful hunts)
-Hunters- Predators who have matured enough to participate and activly hunt on their own (ie: the Preds from P1 and P2. I feel that P1 pred is old and a vet, but was never seected to becoe a warrior, and P2 was still a younger pred, weather he was too young for the test or didnt make it)
=everything after this is pure speculation with little to no basis on events showns in the films=
-Young Bloods- Predators who are too young to hunt on their own, still needing practice, edjucation and training (just on the assumtion preds dont come out of the womb ready to hunt with high-tech weapons)
-Rouge- Predators who deliberatly disobey the code of honor and/or show no loyalty to the clan. (We have observed what appears to be like a samurai-esk code of honor, so its not to wild to think that a pred could disobey this and go ronin or rouge, if you will)
-Arbiter- Preds who enforce the 'law' of the preds. Judge, jury, and, yes you guessed it, executioner. They would have to be preds of an extremely high caliber of skill and the best in their clan, to hunt other wild preds.