6
Hezron and the Hezronite clan, Carmi and the Carmite clan.
7
These made up the Reubenite clans. They numbered 43,730.
9
The sons of Eliab: Nemuel, Dathan, and Abiram. (These were the same Dathan and Abiram, community leaders from Korah's gang, who rebelled against Moses and Aaron in the Korah Rebellion against God.
10
The Earth opened its jaws and swallowed them along with Korah's gang who died when the fire ate them up, all 250 of them. After all these years, they're still a warning sign.