This might have been on normal difficulty.
Harappans - Carthaginians - Khmer - Edo. If you build a lo of the river districts as Harappans definite try to nab the Khmer. I'll see if I can get the age by age breakdown.

The biggest thing that sticks out is city development with currency still seems out of whack. I will try to expand on my previous point that simply "buying" as many districts and infrastructure improvements as you can feels, to me, less satisfying in Humankind than in the Endless Games. The currency in those settings is Dust, an Ancient-tech residue (nano materials ready to be coaxed into physical being either through the metaphors of magic, magic, or mysterious technologies ... hehe). But here it's meant to stand for currency. And while it's true that one turn is meant to be an abstract period of time but it's still jarring. I do love the distinction between infrastructure and districts. I don't want to limit a financial culture too much but also I think it's exceptionally strange to be able to - found a city with a settler and effectively fill out a territory with districts - and potentially - buy all the infrastructure. So I'll focus on a thought I had.

Infrastructure can't be purchased - it has to be built. If infrastructure's cost scaled with the number of your cities - on a continent. The more cities the more expanding infrastructure costs. 

No District Limitations

If you want to buy out districts you can - but I feel like they should have two limits. 1st up - unworked districts do not receive adjacency bonuses. This is a little problematic because it adds an extra thing to keep track of unless it's limitation is all or nothing. Think of it like a way to approximate full employment in a business sector. Unless all your X districts are fully staffed they don't gain that adjacency bonus. This might also stem one of the problems of getting to a second continent earlier. Additionally specific to the industry district - mountains do benefit you too much. But with this limitation in mind you get more benefit from being mindful of your districts staffed at capacity. I can imagine a further, or, another way to implement a limitation to district bonuses. You can only gain a number of district to district adjacency bonuses equal to the age.

Trans-Oceanic Money Teleportation

I found it incredibly bizarre that I could spend the accumulated money from my first continent to instantly buy city improvements. I'd go so far as to say as it broke my sense of immersion. I feel like a district could exist - for secondary continents or islands. The "VAULT" which lets you take loans against your wealth total, presumably at an interest rate. 

Religion

Took advantage of religion this time and benefitted hugely from the stability buffs! I like the way you could use religion to balance your society as a gaming decision but almost felt like either the 4th tenant or some of the tenants should get chosen for your faith by the followers. It might frustrate the players but it could give it a life of it's own and better reflect that a religion can be organic. 

Influence
I like that stability and influence are separate but support each other. Islands seem to be immune to foreign influence.

Edo

Edo easily feel over powered. But it was a fun finishing civilization for the open access.

Combat 
I'd be curious to see if height advantage still felt viable at +2 instead of +3. But that might be the kind of bonus to fine tune greater difficulty. 

Deployment still feels wonky.