Future expansions.

And even in the Rampart, there is only a military alliance of dwarves and elves; they have different states.

You are right, +1 to you. It's like an empire there... If you take the third game, for example, in the Dungeon, it's not even clear who they are. Didn't anyone find it strange that harpies are there? Or what do these monsters have in common? There are seven different monsters there, just like in the Swamp; what brought them together? And in the Rampart, there are two units for the "elves" (WOW!) – an archer and a pegasus rider. (By the way, what happened to the centaurs from the first two parts? They were for the Warlocks.) So, these weren't elves; it was the Rampart (or bastion. I have a different translation now). The only ones who represented the entire race were the humans (5 units with the same appearance!) and Inferno (6!!!) (I'm not counting Necropolis because they're just corpses there).