According to the author of Genesis, this verse tells us about the family of Seir the Horite, people who lived in a certain land a long time ago. It lists the names of some of his children, like Lotan, Shobal, Zibeon, and Anah, to help us learn about their family tree.
Genesis 36:20: These [are] the sons of Seir the Horite, who inhabited the land; Lotan, and Shobal, and Zibeon, and Anah,
Mentions Anah as a person, while Genesis 36:20 implies Anah is a descendant of Seir, causing confusion about lineage and identity.
Genesis 36:24: And these [are] the children of Zibeon; both Ajah, and Anah: this [was that] Anah that found the mules in the wilderness, as he fed the asses of Zibeon his father.