Many dissentions

Mormon mentions that there were many dissentions to the Lamanites in the days of king Benjamin. I’ve never paid attention to that before but it makes me realize that there was a lot of mixing between the Nephites and the Lamanites over their history. In fact, when we add that fact with the recognition that the Nephites were known as Nephites and Jacobites and Josephites and Zoramites and that the Lamanites were known as Lamanites and Lemuelites and Ishmaelites we should abandon any certainty that archeologists would discover 2 nations when studying the locations and artifacts that survived them.