The one with the Lokis is the Soyakaze, the one with the Ulysses is the Krios.
I'll be making one more "Orion Mainhall" which will be the Intrepid, which is in early progress along with the Aquitaine.
Other mainhalls I'm considering (because of the geometry I have to make for the cutscenes might as well be reused): Arcadia, Briefing Room, Shivan Hallway... But these are just concepts and may not actually happen.
I will, however, be having a go at several Vasudan mainhalls at some point including a remake of the Psamtik.