To tag onto deezel's answer, even between Storm, Traillii and Ragnar the staging is very different. Storm's staging was being recommended with the caveat of an expensive upgrade cable, Storm out of the box has a rather narrow stage but goes quite deep. Traillii is very wide, so much that vocals distinctly sound like it's coming from 2 channels. Ragnar is very holographic but can reach the point of almost sounding hollow depending on the chain you are using. So I think they all achieve what you're looking for but in very different ways.
I like your differentiation how the staging differs between STORM, Trailli And Ragnar.
And when I compare my own listening experience with the three candidates with yours , I really have to agree with your assessment.