The missing enemy designs I can see are.... the small Dino creatures, flying imps, mecha Behemoth (Versus 2011) and the mammoth sized Iron Giant (FFXV 2013).
And bats(tehy appeared after the small dinos in the 2011 trailer)
I really hope the Mecha Behemoth and Boss type Iron Giant make it in to the final game! Tabata please.
I don't know about the titan iron giant, but mecha bahemoth NEEDS to happen.
It was so hype.