It's too late for Iowa, rights to her were bought out with all that extra money Star Wars made back! Save yourselves! Run! Run while you're still independent intellectual property!
Well, I did think that too, but a while ago my teacher taught us a bit about copyrights in my country - and whilst explaining some things, he showed us a fan-made video [animation] of a comic I liked since I was a child.
How to say this - it's like I came to the realization that sometimes it's for the best for the copyrights to be respected and only the more or less official portrayal to be there, for the sake of the children. Even if it had to crush every other [as nice as they might be] fan-made stuff.
Upper left: Kiyoshimo Upper middle: Gangut Lower middle: Akagi or Kaga Lower right: one of the ducks Upper right: no idea
I think the lower middle ema would be Kaga's since Zuikaku's clothes got new colors for her Kai while Kaga didn't because her real-life counterpart didn't had the chance to have a remodel either.
Also Akagi wouldn't bother about getting a Kai or Kai-2 since she has no such rivalry with Zuikaku plus Kaga's Kai might be DDH-184 which is way too new and modern for KDKW Games to add.