Class wise? I've always been partial to archers, riders, and casters.

Anyways, after a bit of thought, I'm leaning towards Tesla and Caster Edison. Edison wouldn't be his FGO counterpart since that timeline has all the US presidents fusing with him, and only for that one scenario. I don't think its needed, unless you feel otherwise. That or Charles Babbage, if any of them are deemed fine. More modern I know, but I have a soft spot for those three. Otherwise, if you know of any Riders, Casters, or Archers you might like to see, I can try and see if I can pull them off.

I've also given thought to making myself a Master, and in that, adapting one of my characters to the setting. Would the daughter of an archeologist mage turned tech mogul with possible dirty money ties be accepted in some form? Asking since that's a variant of my personal OC I've played in a few rps, and I could adapt her. I'm not sure what her origin or element would be, since I don't think there's magecraft associated with technology in canon, but I may be wrong. I'm more versed with the surface level stuff, like how the Grail Wars work, the nature of the Beasts, summoning, class system, and other factors. Less so with deeper stuff like the specifics behind some mystic codes, origins, and element stuff. Like I get Avalon being why Emiya has sword for element and origin, but otherwise, yeah.

Sorry if this was a bit to read, I was busy thinking in Ancient Medicine and Ancient Cities.