That's better! Now check your link:
"3) Arabia:
The Arabian peninsula is undoubtedly the Arabs' homeland, and the peoples that inhabited it in ancient times are to be regarded as the ancestors of the modern Arabs. Now, the query consists in establishing how much Semitic these peoples were and up to what amount the Ishmaelites have contributed to the formation of the Arab identity.
In the most ancient records the whole Arabia was commonly designed under the generic name of "
Kush", which was extended throughout the entire region comprised between Southern Mesopotamia in the north and the White Nile Basin in the south, that is, including both sides of the Red Sea and the Gulf of Aden. Subsequently, there has been a clear distinction between Northern and Southern Arabia since early times, distinction that endured for centuries. The Arabs are the result of the progressive fusion of both entities developed over the original Kushite background.
·Southern Arabian peoples:
Seven Kushite peoples: Seba, Havilah, Sabtah, Ra'mah, Sabtekha, Sheba and Dedan.
Twelve Semitic tribes (Yoqtanites): Almodad, Shelef, Hatzarmawt, Yerah, Hadoram, Uzal, Diqlah, Obal, Abima'el, Shaba, Hawilah and Yobab.
·Northern Arabian peoples:
Early Kushite population: Kûsh, Mušuri, Hawilah, Makkan.
Eight Semitic tribes (Midyanites/Lihyanites): Zimran, Yoqshan, Medan, Midyan, Yishbaq, Shuwah, Sheba and Dedan.
Twelve Ishmaelite tribes: Nebayot, Qedar, Adbe'el, Mibsam, Mishma, Dumah, Massa, Hadar, Teyma, Yetur, Nafish and Qedmah.
The characteristics of these peoples are exposed under the next title.The Arabian Kush and the Ishmaelite Myth
Even though the name
Kush is usually associated with Ethiopia because of the Greek translation of that name, Kushite peoples were in early times the inhabitants of the whole Arabia, Southern Mesopotamia, Elam and a branch of them reached India as well. Indeed, in ancient records the term
Kush may have different meanings and often it can be understood only by the context, and it is possible to distinguish at least four different lands which in some periods were known as "Kush": Sumer, the Horn of Africa, India and Arabia. The same happens with the term
Havilah, that was a Kushite tribe -they should not be mistaken for the Semitic Havilah, that is identified with ...."
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It goes significantly on, but you get the flavor. "Kush" then included all of Arabia and as far south as the White Nile Basin. The division of the "Kushes" came later. The issue for today is that the most typical Cushitic markers are rarely found in traditionally Arab countries and have been shown to have arrived later..
https://genome.cshlp.org/content/early/2016/01/11/gr.191478.115.full.pdf
"Indigenous Arabs are descendants of the earliest split from ancient Eurasian populations". Nearly all the Bedouins are J1.