en_tn_lite_do_not_use/gen/36/40.md

the heads of clans

"the leaders of the clans"

according to their clans and their regions, by their names

The clans and the regions were named after the heads of the clans. See the UDB for a clearer translation. AT: "the name of their clans and the regions where they lived were named after them. These are their names:" (See: rc://en/ta/man/translate/figs-explicit)

Timna, Alvah, Jetheth, Oholibamah, Elah, Pinon, Kenaz, Teman, Mibzar, Magdiel, and Iram

These are names of people groups. (See: rc://en/ta/man/translate/translate-names)

settlements

"dwelling places" or "the places they lived"

This was Esau

This list is said "to be" Esau, which means that it is the whole list of his descendants. AT: "This is the list of the descendants of Esau" (See: rc://en/ta/man/translate/figs-metonymy)