Well I have started thinking about what to put on the neighbouring continent of Djapar, and so far this is what I have come up with. This is very preliminary and is subject to change.
A. A culture based on Arab/Persian model, maybe borrowing heavily from the al-Qadim campaign setting
B. Some sort of Levantine and/or Mesopotamian inspired culture
C. Something inspired by ancient Egypt. This one I am not happy about, but will go with it for now.
D. A Rajput type Indian culture
E. Either South Indian or maybe Indo-Chinese type culture
F. Something inspired by the Berber culture of North Africa
As I said, these are all preliminary ideas, mostly just a starting point.