Or put the two togather - the D&E era equivalent of the those smaller and more mundane steam classes is surely multiple units, which have always been the poor relation of locos. Yes, it's got better in recent years, and the late BR/Early privatisation period is better covered, but there are still plenty of gaps, from workhorses to iconic trains. Cross-country class 120 and 4-VEPs (at least in N) are two of the more obvious.
On the other hand, D600s in N. You know you want to....