Great point. Yes: for one collection of brains areas/divisions, the names are (kind of) more meaningful. That collection is the neurons on the periphery of the central nervous system. There is little ambiguity about which motorneurons project to the arm muscles; or about which neurons in the mouse receive direct input from the whiskers. So the names used to identify those groups map better onto functionally defined neurons.
I’ve implicitly put the ventrolateral medulla neurons in this category in the piece.