Believe Goldfish was from Yesha also. The design has a lot of Yeshan ornaments and it is flashy enough where it could be of Yeshan origin. But it is a fast enough ship design where I could see it being used by many mercenaries or pirates.
Mobula, that makes sense that it would be Guild. That is a lot of deck space that goes to waste and in guild lands they would load it up with goods for shipping.
Spire, dunno if that fits the Baronies. If you look at the concept art, Baronies designs are kinda blocky and weird. Spire is also a more of a guard ship if you look at it from a design standpoint. Which suits it for many nations. So it could be an independent design. Spires would most likely have vertical berths which would allow it to rise quickly when needed and just lower right down when the action would be over. Maybe Anvalan design. If Anvala is a massive fortress city then having Spires able to fly in a moment's notice would be advantageous. Also the mounting would mean they wouldn't need to fly to be able to start opening fire.
Junker...if it is Arashi then that could be possible but the Junker to me seems to be a very modular design. Something that could be changed and made to fit many different uses. Also Arashi being at war with the Guild, they'd probably opt for quicker vessels than a Junker.
Anglean vessels in the concept art look similar to Chaladonian. Which makes sense because most of their raiding targets would be across the water. So being able to water land a vessel would be something an Anglean captain would want. But there are no distinct Anglean ships in game. In fact, I don't even think we'll address this much in the VN, outside of Firnfeld. But we'll see.