Well, here's what I've been able to glean. Playing Predator 1.29
First, I did buy just the 1 worker from Germany, some time between 1000BC and 590BC. I bought 2 Russian workers between 590BC and 10AD.
I had 2 usable saves for examination - one 590BC, the other 310BC. The 310BC was an Anarchy turn save, so I hit return a few times to get me into a govt circa 250BC - that way I could establish embassies etc.
The WOW lineup in my game;-
The Collosus 1225BC Knossus (Minoan)
Pyramids 1075BC Sogut (Ottoman)
Oracle 1075BC Entremont (Keltoi Cascade)
Great Wall 630BC Sogut (Ottoman)
Great Lighthouse 410BC Richborough (Keltoi)
Great Library 90 BC Knossus (Minoan)
Hanging Gardens 90BC Entremont (Keltoi Cascade)
From the 590BC Save
Great Lighthouse Production
Knossus Minoan 14 turns
Leptis Minor Carthage 88 turns
Salamanca Spain 53 turns
Richborough Keltoi 9 turns
Bactria Persians 134 turns
Orleans French 39 turns
Marassantiya Hittite 43 turns
Great Library Production
Phaistos Minoans 178 turns
Alexandria Egyptians 171 turns
Carthage Carthage 51 turns
Bursa Ottoman 120 turns
Toledo Spanish 180 turns
Entremont Keltoi 23 turns
Persepolis Persia 119 turns
Berlin Germans 71 turns
Paris France 34 turns
Hattusus Hittite 44 turns
Zimbabwe Zula 49 turns
Moscow Russia 34 turn
At this stage, all civs still in despotism.
For the 250 BC save (after Richborough had built the Great Lighthouse) these places were building the Great Library;-
Knossus Minoan 9 turns
Rome Roman 60 turns
Bursa Ottomans 336 turns
Alexandria Egypt 72 turns
Leptis Minor Carthage 9999 turns (anarchy)
Salamanca Spain 27 turns
Entremont Keltoi 16 turns
Ur Babylon 35 turns
Persepolis Persia 47 turns
Berlin Germans 25 turns
Zimbabwe Zulu 53 turns
Moscow Russia 21 turns
At this stage of the game, only civs still in despotism were the Babs and Persians, with Carthage still revolting. France had a war with someone - pretty sure it was Spain. I had just started a GPT deal with France for silks, and it ruined my GPT reputation for the rest of the game.
So, to put matters simply - Knossus just missed out on the Great Lighthouse, but pipped Entremont to the Great Library because of the cascade. It wasn't immediate, it took several centuries - but having stored up so many shields, it's understandable why Volak just put them towards the next wonder.
I can't really see much difference between Germany building the Great Library or the Minoans.
EDIT: One thing that delayed Ottoman and German wonders was a war between them around 300-200BC. I can't check the start date for sure, but they are going for it hammer and tongs around 10AD, so that certainly didn't help their cause.