Ill ben honest, its not like I forgot about the list, I was talking about the reason they would be in. So long all fighters on humanity side weren't figure blessed with magic or divine powers and instead were being that got everything the human way. Well, aside from Ada but even then he too had a human quality to him.
On the other hand, Arthur is a Hero, not a Human and Gilgamesh is something along the lines of divine lineage or something. But then again, I don't remember Adam doing what he did for getting kicked out of eden so we can already think of all backstories for the fighters being different than what we can gather from RL sources.
Honestly, I am pumped out for Leonidas, Tesla and Nostradamus. Especially since the last two are in no way physical fighters so I kinda expect them to be some kind of mage. Maybe Nostradamus will be something like FGO Archimedes and maybe Tesla will be some kind of Sith/Jedi Lord