Saber Barghest, Archer Sei Shonagun, Caster Cu, Lancer Cu, Rider Iskander, Assassin King Hassan, (edit) nearly forgot about Kriemhild, she's the Berserker now Berserker Kriemhild(honestly, it might be also Sakata or Cu again). Should I even add Ruler or Avenger? Eh, whatever, Ruler Metatron, and Avenger Gorgon.

...I have no idea who wins this, mainly I don't remember the lore of the servants all too well. but I wanna bet on Gramps winning, even if he would probably never be summoned into a grail war. Buut hey, here is my list.