Regarding Hebrew, it’s a tricky word too. It refers to the language of course, but also was used to describe the tribe or nation that the people of Israel descended from. There is some debate on the etymology and exact definition though.
Some think the word derives from Abraham, and refers only to Abraham’s descendants, but others think it is derived from an older patriarch named Eber, so it could include some other closely related tribes as well, like the Edomites.
You seem to know your stuff on this; doesn’t “The Children of Israel (Jacob)” get the job done?