I created a Kubera MBTI Character Chart!
For those unfamiliar with MBTI, it stands for Myers-Briggs Type Indicator (read more here and here), and there are 16 different Myers-Briggs personality types. If you don't know your MBTI type and want to find out, there are some tests online that are based off of the original (which I believe is now only available through official channels) with varying degrees of accuracy, so as with any personality test, take the results with a grain of salt and perhaps a good look at its corresponding cognitive function stack for a better idea.
The character typing was done by yours truly, and though I'm fairly confident in most of the type assignments after doing research (and good old-fashioned intuition), I'm far from infallible, so feel free to point out if you think someone may have been mistyped.
Bonus typings! (which I am significantly less sure about, though some will likely become clearer as they appear more in the story)
Hura: ENTP
Riagara: ISTJ?
Samphati: ISTJ
Rana: ISFJ
Ruche: ESFP
Riche: ExTJ
Mirha: ENFJ
Tilda: ISxJ?
Lutz: ENTJ
Shess: INFP?
Agwen: ESTJ?
Kasak (earingless): INTP?
Kasak (w/ earings): ENxP??
Feel free to add to the list/propose your own