It basically suffers from a terminal "other side of the hill" syndrome, I think?
It also never experienced the massive technological fetish that the USA did in the 1990s (or rather, the 19XX?), when it realized it could beat up the Third World with 1980s electronics, and extrapolated this into the future eternally. So it's skeptical of electronics in general (which is partially why it's prone to recycling and reusing old technics), but theoretically its "WW2" experiences should match up reasonably well with the Western Allies' rather than the Soviets, but by that point the concepts of standard operating procedure and "school solutions" had been ingrained in the Gallan military for half a millennium, so it would have resembled the post-war Soviet system the closest?
Really, it doesn't seem that Galla fits any IRL archetypes very well. It can be shoehorned into the American archetype for its industry and mass production through tooling, but it can also be shoehorned into the Soviet archetype for its love of standard operating procedures and school solutions, but it fits neither because both of these are results of centuries of cultivating a fetishization with standard practice dating to the middle ages.
The closest I can think of to describe Galla is "massproductionocracy". Like Venice meets Carthage. A big, filthy rich trade empire that sits at the hub of world commerce and soaks up money to turn into factories or something.
I think Frisia will have something that is more or less a straight rip of IdZ with some colonial air-mechanization thrown in for good measure. Everything bad, Frisia does. It gets away with it too. I still sort of need to flesh it out, though. I only have its borders and a partial smattering of its climate recorded, and there's very little I know (read: made up my mind about) about its history or what/how it thinks about things. I haven't worked out to what extent Frisia relies on radio yet, but it probably is "a lot", although I don't know the reason for this yet.