1)
Here it counts 156 from Bnei Magbish. The count in Nechemyah does not mention them at all!
1.
Malbim (64): They were included there in one of the families that had a higher count there, e.g. here Bnei Azgad are 1222, and there they are 2322. We can say that here Bnei Magbish are called on the name of their city, and there, on the name of their family (Azgad).
