I must thank a lot Jake for the pics and the two links!!
About the two KI2 midi for SNES, I'm not sure about their reliability nor how could be uploaded online.
Anyway I'd like to clariry more the speech of the KI2 white name as the former beta version ever.
Searching again, I have found one of the two site that talk about of KI2 beta as played game.
http://www.gamefaqs.com/coinop/arcade/file/583591/582
Here on the section rumors, the guy explain that on the beta version there were the humiliation, than removed, but even if it's a rumor, on the other site I have read that they replaced them to the 2nd ultimate. So the KI2 beta had just one ultimate and an humiliation per character.(and of course in this faq there's the explaination for every glitch).
And to confirm the rumor of the guy about the humiliation in the beta version, here we have the pic of Jake:
Moreover there's an explanation why the guy at Rare decided to change the names(since the several preview, has white names).
Several years ago I talked to a guy that played the beta KI2(with white names) and I asked his a lot of things, such as the character color missing(green orchid etc) and the names.
Basically he said me that there was a glitch. Sometimes when the brief FMV that introduce the stage ends and there's the READY, one character name "disappear". It was irrelevant both on player and CPU.
Thus, on the 2nd beta version of KI2(the one with some changes such as the bigger flame on the Stonehenge, with yellow names) the guy at rare, probably fixing the glitch they have edited them widely.
EDIT:
I just want add the pic of KIG beta found in a video of the E3 96:
and of course the whole video:
The beta stonehenge could be seen at 3:39
Here the shots are in a similar angle of the stage; the camera is more aimed to the sky instead of the final version of the Stonehenge and the well seems missing while clouds run like the one of KI2.