Here's a family tree of sorts, but there's no clear line of succession. The crown (or whatever) isn't passed down from father to son. There's been a recent trend of the new kings being brothers (/half brothers) of their predecessors. There's supposed to be a secretive process whereby senior members of the royal family select a new king when the old one dies, based on things like whose mother had the highest standing with the father (some half-brothers are more equal than others).
I have forgotten how to post links (lack of wanting to), but if you go here
http://www.datarabia.com/
you might find some answers. It appears there are 2,500 in the family, so good luck!
They wouldn't even show up on the power scale, not even the right generation. What would be of interest is to know what faction they backed.