This catalog of the makeup of the Nephites and the Lamanites ends with the lumping of divisions into the larger gross categories of Nephite and Lamanite. It is also the precise list that Mormon gives in 4 Nephi. See the commentary following 4 Nephi 1:39. These are still generic designations, even though they have the appearance of specific lineages.
As with the pre-Messianic-visit world, the relations between Nephite and Lamanite lead to war.