Just thinking more about who all is on the island, past and present.
1. The main survivors from 815.
2. Unknown number of Tail Survivors from 815. 1 Verified (Rodriguez)
3. Rousseau's group, presumed all dead but Rousseau
4. Ethan's group. Rousseau has spent time with him/them (Scratches by Claire during missing time). Unknown relationship, with the son theory out there.
5. The "Others" - Bad asses who light smoke signals when they go on the warpath. 4-5 Verified members, all on the short range boat.
6. Lord of the Flies group now found - Maybe 2, 4, or 5 and not a new group, maybe not.
7. Possible survivors from Black Rock (or their descendants) or the Drug Plane - Again, maybe incorporated into 4,5,or 6
8. Desmond and the Dharma Corp - Is he alone, or are there more Corporation guys somewhere on the isle.
Any More I'm Missing? Regardless, this Island is getting pretty crowded, Isn't it?