Sforno on Genesis 36:1/ספורנו על בראשית ל״ו:א׳

1ואלה תולדות, a reference to developments in the clan started by Esau, both in people, possessions and political influence. The word תולדות in this context is analogous to “מה ילד היום,” “what the day brings.” (Proverbs 27,1)

2עשו הוא אדום, someone always addicted to realise all his material desires, satiate his lust. [the author interprets this as the justification for the Torah repeating this information which we had been given in already 25,30. Ed.] The overpowering desire of Esau for what attracted his eye was demonstrated when he could not remember the name “lentils” when he was tired, demanding to be given from “this red, red stuff.”