Compared to historical titles , the game is streamlined in some areas such as city battles (requires less strategic depth due to its layout and most humanoids can just magically summon a ladder and climb the wall) but it makes up with great variaty of units.

So what are new:

New unit types : Lords, monsters and flying units. Lords are the commanders of the armies, depending on the type they can be effective at killing infantries or be effective at killing other lords or cast some school magic. Monsters have huge variaty, it can be dragon , giant , minatour or a dinasour , they are count as big units (like cavalry units) and countered with spear units.

Unique races : Each race has its own unique weakness and strength. For example dwarfs do not have any form of cavalry or magic and has the slowest units in the game but they are heavily armored and don't give up easily, where as skaven relies on hugely outnumbering and swarming the enemy with expendable infantry . So you would want to change your army composition if you want to exploit these weaknesses.

Im sorry if those were not the things you were looking for if not , I think checking out some gameplay videos would get you some ideas , i would recommend milkandcookiesTW or partyelite .