30 chief Dishon, chief Ezer, and chief Dishan: these are the chiefs who came of the Horites, according to their chiefs in the land of Seir.
*Minor differences ignored. Grouped by changes, with first version listed as example.
These are the dukes that came of Hori,.... The ancestor of Seir, whence he is called the Horite, unless the singular is put for the plural, used in Genesis 36:29,
among their dukes in the land of Seir; not that there were other dukes besides them in the land of Seir until Esau got among them, but these were they whose habitations were before in the land of Gabla (or Seir); as the Targum of Jonathan paraphrases it; or "in", or "according to their dukedoms", as the Septuagint version; in their respective families where they had the government, and which became very numerous.
"These are the princes of the Horites according to their princes," i.e., as their princes were individually named in the land of Seir. ל in enumerations indicates the relation of the individual to the whole, and of the whole to the individual.
*More commentary available at chapter level.