2 So this allotment was for the rest of the people of Manasseh—the clans of Abiezer, Helek, Asriel, Shechem, Hepher and Shemida. These are the other male descendants of Manasseh son of Joseph by their clans.

Read Joshua 17:2 Using Other Translations

There was also a lot for the rest of the children of Manasseh by their families; for the children of Abiezer, and for the children of Helek, and for the children of Asriel, and for the children of Shechem, and for the children of Hepher, and for the children of Shemida: these were the male children of Manasseh the son of Joseph by their families.
And allotments were made to the rest of the people of Manasseh by their clans, Abiezer, Helek, Asriel, Shechem, Hepher, and Shemida. These were the male descendants of Manasseh the son of Joseph, by their clans.
So the allotment on the west side of the Jordan was for the remaining families within the clans of the tribe of Manasseh: Abiezer, Helek, Asriel, Shechem, Hepher, and Shemida. These clans represent the male descendants of Manasseh son of Joseph.