alaikum salam Yahya
can you re-check the numbers of the ayat you talk about ?
7:59 "We had certainly sent Noah to his people, and he said, "O my people, worship Allah ; you have no deity other than Him. Indeed, I fear for you the punishment of a tremendous Day." (there is no mention of "Ad" here)
10:73 "And they denied him, so We saved him and those with him in the ship and made them successors, and We drowned those who denied Our signs. Then see how was the end of those who were warned."
Last one is simply about the people who survived the flood. So you can think of them as the first generation of a new community.