Boris Gudenuf
Deity
. . . Explanations for weirdest choices:
Poland agrarian actually makes a lot of sense if you know about early modern Poland and how its economy and society worked.
French builder mainly because I had no idea where to put it otherwise, and not only some European culture should have it in the Industrial era, this is the era when they have built Eiffel Tower
- and the Suez Canal, and attempted the Panama Canal, and rebuilt Paris almost completely. Good Call.
Swedish scientist because of Nobel, Linnaeus, Celsius etc.
America merchant because American Capitalism is probably its most iconic affinity.
- and as early as the 1830s America already had the second largest merchant fleet in the world, after Britain: "aggressively expansionist merchant' if there were multiple Affinities!
German scientist - I really, really hope they won't make MODERN CULTURE GERMAN, AFFINITY: MILITARIST and instead promote incredible achievements of their science.
Not only 'pure' science, like Humboldt and Planck and their ilk, but Applied Science, as in the German technical schools system of the late Industrial and later Eras, the World's foremost chemical, metallurgical, and pharmaceutical industries in the early 20th century, and premier machine tools fabrication even today.
Iroquis agrarian because of their very unique society and also themes of, ya know, harmony with nature as opposed to ruthless industrialized exploitation.
Actually, less on any 'tree hugging' than the fact that without draft animals, it doesn't make a lot of sense to clear large fields for plowing. On the other hand, the 'three sisters' (maize, beans and squash) agricultural system they adopted was one of the most efficient in the world at providing a balanced diet while maintaining most of the existing eco-system: THAT should be acknowledged in a Historical 4X game, finally!
Italy builder because of Italian industry.
I assume you mean Italian light industry, because in traditional Heavy Industry (iron, steel) Italy was in near-last place for most of the Industrial and post-Industrial Eras. In WWII, the Italian Army was the least-motorized and least-mechanized of any major power other than China and Japan, and her aircraft and tank production was the least of all the major protagonists - in fact, she never managed to produce a medium tank (30 tons weight or better) at all.
It would be a tough call, but I'd be more tempted to make Italy Cultural/Aesthete based on its dominance in the fields of Opera and Fashion/Clothing design.
Soviet expansionist because very few cultures deserves this affinity in the modern era anyway, and they were probably the most succesful in this aspect.
Unsuccessful Expansionist, though. While they 'expanded' over their neighbors (with the notable exceptions of Finland, Iran and Afghanistan) they lost virtually all of it in 1991 - 1992 when the Soviet Empire fell apart like a soggy pretzel. On the other hand, the Soviet State from Stalin to the end was heavily Militarized, with an economy and structure almost totally devoted to military production and sustainment. IF they are going to emphasize the non-WWII aspects of Japan and Germany, the Soviet Union is about the only major Militarist state left.
fEthiopia Militarist, because adding this affinity to most modern cultures feels denigrating, while in case of Ethiopia it feels heroic: resistance to colonialism (famous 1895), stubborn ww2 resistance, moderate underdog marxists winning civil war against insane communist regime...
There were two battalions of Ethiopian troops in the United Nation's contingents in the Korean War: my father was attached to them, and met men wearing a little badge with a silver spear on a blue background - signifying that they had defended their country with a spear, against the Italians 10 years earlier. The Ethiopians were, man for man, among the most effective infantry in Korea . . .