From first impressions, Jot 2 has more width and depth than Jot 1. Both Asgard 2 and Lyr 3. I think the Continuity solution may increase soundstage.
Jot 2 has a bit of that "holographic" sound that creates a sense of three dimensionality to music, whereas Jot 1 was a more 2D image.
I've never really heard much of a height component to music so can't help there. The Jot 2 soundstage is much improved and there is a greater sense of space between sounds than with Jot 1. Jot 1 generates a very intense high energy experience, but is very focus near the ears. Jot 2 takes that out to the shoulder, very similar to Jyr 3. I'd have to go back and forth to see which amp wins on staging. The intensity (slam factor) of the Jot 1 is maintained in Jot 2, but now takes up a larger sphere.
My only complaints with Jot 1 were treble detail and staging and Jot 2 fixes both of these issues for me.
Regarding Mjolinir 2, I've only heard it at CanJam fed by Gungnir Multibit into Aeon 1 open. From memory, Jot 2 wins on speed and maybe imaging but I'd have to hear again. Both have really meaty bass that is very well textured. I think staging was better on Mjolnir 2.
I was going to get a Mjolnir 2 but then Lyr 3 came out and fit on my desk better. Gungnir Multibit > Mjolnir 2 > Aeon open was a really amazing combo with extremely satisfying bass. It had an immediate wow factor and I'd love to hear this setup again, but it wasn't at CanJam 2020.