Sauds are Bedouin: the long, thin, hooked nose is the genetic marker.
Yes, i covered the bedouin part few posts back here too. Most of them, incl. general population ie orginial inhabitants of (saudi) arabia are various bedouin tribes & clans. The bedouin part also extends to countries like Jordan. But saudi arabia’s general population which the other poster was referring to in terms of their darker skin color & thinner ‘shape of face’ (not nose) are not all bedouins. They’re often mixed.