Adam=Adaum means to blush or see the blood through the skin. It means white. Adamites have only been on Earth for about 7000. This is anthropology, history, Biblical history. Not all people who look white are Adamic or Caucasian-most are mongrels.
Jews are not Adamites or Israelites - According to their own Jewish words and written history. Jews are mongrels. Even if they had one parent who was an Israelite, they would be considered illegitimate because it breaks God's divine law.
Which one? The flood with Noah was only up around the Tarim Basin. There were other floods prior to Adam arrival in the flesh on Earth. Mountains rose continents dropped in the seas. There is much written history that is not readily available. You must dig.