Austro-Hungarians (aesthete)
British (expansionist)
French (scientific)
Germans (militaristic?)
Iranians (merchant? aesthete?)
Mexicans (agrarian?)
Russians (expansionist? agrarian?)
Siamese (builder? merchant? aesthete?)
Swedish (scientist? builder?)
Zulu (militaristic?)
1) Please God Almighty let Germans not be MILITARIST CULTURE, this brings such terrible connotations and stereotypes. Especially awkward by being done by a French studio. I really hope they are Builder.
2) Iranians are imo almost sure to be Aestethe. Persian aestethics, art, architecture and culture are very powerful, and honestly were the only thing going well for this country in 19th century

3) I am surprised they took Mexicans, as Brazilians would be more natural candidate for Agrarian. Although they could be another Aestethe.
4) Russia is probably going to be land - based more direct counterpart to British expansionist because seriously look at the size of this empire.
5) Siamese probably are going to be Aestethe, it really fits them.
6) Swedish IMO 90% is going to be scientist culture referencing Nobel and Germanic scientific contributions, with Germany being Builder.
7) Zulu are really weird, because this culture was hardly industrial, especially I have no idea how will they show their military unit in the industrial context. Idk why they went for Zulu instead of much more natural militaristic Ethiopia which actually survived this period...