The fastest time is going to require a strong Monastery. Marble is helpful, but I'm not convinced it's necessary.
I never get the GL and I don't care. I never get the Oracle and that
does annoy me, but there isn't much I can do about it. Other builds take priority early on.
I agree with walkerjks's Wonder list. I'm surprised that you don't mention the Porcelain Tower, though. That thing is
essential.
I am not totally sold on Arabia for Emperor. I am betting that Siam in a strong start takes the crown. However, I think that more starts are playable as Arabia, so you'll get more shots at it that way (less time rerolling, more time playing).
Burial Tombs don't have an Artist slot, and that makes Egypt
bad IMO. Speeding up Wonders doesn't pay for delaying the first Landmark, especially since the only Wonders that are time-critical are going to get GE'd anyway.
EDIT: Turn 233, Siam. Lost a turn to fail terraforming and had trouble working Sistine into the build order, otherwise game was pretty tight. 3 Incense and a Marble (after burning a turn to get that site), two Plains Wheat and a Deer, IDK what more you could ask for. Guess I just need to play a bit better and/or get the Oracle.
Strategy was basically a Patronage Gambit except I get a GE for Stonehenge instead of popping Theology/Civil Service.
As with Neuro, it hasn't been verified yet.
i've been avoiding: france, greece, india, russia, arabia, iroquois
Yup, those are all very bad.