I would try and base it on some real life lizards of some type.
1) The chameleon's that the deathclaws FEVed from
2) Komodo dragon's - Live in large groups. Not so much a family group but they tollerate each other.
3) Crocodiles, fight each other for territory. This wont doo as in F2 they traveled in packs.
So maybe make it like this.
1) Queen/Mother Deathclaw - The current breeding mother of the pack, uauslly a lot more aggreesive and stronger due to the urge to protect her young. This would fit both F1 and F2. Maybe as each deathclaw female comes on heat she in turn becomes the breeding mother.
2) Female Deathclaw - Currently not breeding or laying eggs, this Deathclaw does not have the same hormonal embalance that causes the Mothers to be so aggressive (ie: non PMS deathclaw)
3) Alpha Male - The biggest strongest male secures the breeding rights within the pack. In other words he is bigger and meaner than all the other males (we want bigger claws on him!)
4) Male - These are the other males who got out manovered by the alpha male and are not as strong.
Perhaps the females tend to be slighty stronger than the males (I *think* this is the case with lizards but not sure sorry)
You can then thow in baby deathclaws etc...