I'm a little late to finish but my game finished like a lot of the others.
Ended up as a 1963 Emperor Space Race.
As I said in my last spoiler, I went for starting a golden age with Economics, Communism, and Physics. I got all those, started the golden age, and about a turn in ragnar declared war and took Lagos by an amphibious attack. I was in a golden age, so I switched to nationalism and drafted some muskets (didn't have rifling), then w/ about 2 turns left in the golden age I got rifles, drafted some & upgraded some, and held fine. I think Lagos flip-flopped 4 times- Ragnar took it, I took it back, he took it, and I took it back all within 6 turns or so. Rangar was stupid with his amphibious assault- he didn't land his huge stacks of junk but kinda sailed around my coast, until he finally unloaded in 3 different spots versus rifles- he died.
Augustus declared war on me too (dogpiling effect), but didn't really do anything. I made peace with both of them, teched to industrialism, pay rushed marines and attacked Augustus. The war lasted around 10 turns and he capitulated, with me taking 5 pretty good cities.
From there I just went for a space race. Ragnar declared war on me for a 2nd time attacking with an impressive stack of 3 calvary from a galleon vs some infantry in Lagos again. Made peace soon after (he gave me 500 gold or so, not bad for not breaking a sweat

).
War broke out in the late game (I was probably 30-40 turns from victory) when I bribed Zara yaqob into war with Gilgamesh. Gilgamesh and Ragnar had a defensive pact, and Mansa was Zara Yaqob's vassal, so everyone went to war. Turn after I did that ragnar declared war on me for a 3rd time (I started other war because I suspected so- he had "we have enough on our hands right now), but he didn't do anything except sent some boats around my coast periodically.
As for space race, I think I went for robotics for space elevator, then Superconducters? (one with the thrusters) to get to work on those, to genetics, to fusion, to composites, and to ecology. I finished the SS life support 1 or 2 turns before my last casings came in, but overall I think this was the right tech path to go for balancing building the expensive parts and cheaper parts.
Here's the final screenshot- I had some of my casings cities starve to finish up faster with their casing. Setia and Lisbon were the two heavy builders, w/ Lisbon having ironworks and Setia having a nice 55 base production.