Faithful: I have only played one game by them; it was the second installment of Z. Something like Z: Steel or something like that.
Z: Steel Soldiers
Faithful: Fun game, but both sides were identical, only the color of the units was different.
Z was the same. Actually singleplayer was more about fighting against odds - the AI had more units than you, so you had to outsmart it.
Delixe: Funny thing about Z is that it was all about 1 base and capturing territory. In many ways it was the precursor to Company of Heroes and Warhammer 40k: Dawn of War 2.
CoH - yes
DoW2 - not that much. It is mainly about controlling points, not territories.
In fact, State of War had some similarities too. There you were capturing factories (by destroying them) and they were automatically producing units for you.