In the second generation there are thirteen children of Joktan -- Almodad, Sheleph, Hazarmaveth, Jerah, Hadoram, Uzal, Diklah, Obal, Abimael, Sheba, Havilah, Jobab and Ophir are mentioned while only Reu is recorded as being from Peleg.
In the seventh generation, Nahor fathered Uz, Buz, Chesed, Hazo, Pildash, Jidlaph, Bethuel (Laban's father) and Kemuel. Harran fathered Lot. Abram fathered Ishmael and then as Abraham fathered Isaac, Zimran, Jokshan, Medan, Midian, Ishbak and Shuah.
In the eighth generation the nations of the biblical settings finally emerge. Bethuel's son is Laban, Kemuel's son is Aram (Aram of two Nahors or Aram-Narharaim) by whom the Nahorites came to be known as Arameans. Lot's children were the Ammonites and Moabites.
Still in the eighth generation a special "cousin" relationship is supposed to be the ideal amongst the following. Ishmael's children Nebaioth, Kedar, Adbeel, Mibsam, Mishma, Dumah, Massa, Hadad, Tema, Jetur, Naphish, and Kedemah. Isaac's children the Edomites and Israelites. Jokshan's children Sheba and Dedan. And finally Midian's children Ephah, Henoch, Abida, Eldaah and Epher.