אֵ֤לֶּה בְנֵֽי־שֵׂעִיר֙ הַחֹרִ֔י יֹשְׁבֵ֖י הָאָ֑רֶץ לוֹטָ֥ן וְשׁוֹבָ֖ל וְצִבְע֥וֹן וַעֲנָֽה׃
These are the sons of Seir the Chorite, the inhabitants of the land: Lotan and Shoval and Tzivon and Anah.
Torah Temimah points to discussions of the Chorite inhabitants.
בני שעיר החרי — יושבי הארץ לפני בני עשו.
“The sons of Seir the Chorite” — the inhabitants of the land before the sons of Eisav.
The verse introduces the earlier population of the land that Eisav later occupied.
Derash on the prior inhabitants (continuation of the genealogical material).
The Chorites were the original inhabitants of the land of Seir before the descendants of Eisav.