What is the whole Lion King family tree?

Answer 1

There is only several variations of an unofficial family tree collected by fans based on the book universe of The Lion King universe. What makes the family tree(s) unofficia is that the movie universe is in no connection to the book universe as both films's makers have completely ignored and the first film's makers even verbally denied the book universe existing in the movie universe, on their commentary track on the DVD. So the family tree has nothing to do with the film makers' visions apart from the characters and relationships that are literally shown and told in the movies. And because the book universe itself isn't holding together. It is made of several different story books which contents contradict each others contents. There is absolutely no official family tree what-so-ever outside the characters and relationships shown in the films.

Answer 2

There is no official The Lion King family tree apart from what can be formed from the characters introduced in the movies The Lion King (which is the only canon) and The Lion King II: Simba's Pride (which isn't canon sequel but official sequel nontheless for it was made by Walt Disney Company's people themselves).

Because the profit book universe of The Lion King franchise is not written by Disney's own people but is formed out of separate "fanfiction" story books written by outsiders, which contents contradict each others... They aren't meant to form one entity of a sub-universe. In example, the king Mohatu isn't the father of king Ahadi or queen Uru because Ahadi or Uru isn't even mentioned in the book wherein Mohatu is and the books are by different authors. And among the published books there are two different versions of how Rafiki met Mufasa. Resulting in the book universe being nothing more but a collection of separate "fanfiction" stories. And thus they aren't officially connected to the characters in the movie universe that is canon/official.

Results in; there are only many variations of fan made family trees which form from whatever the fan in question likes to imagine and pick into it out of the many separate "fanfiction" books.

The only real, whole The Lion King family tree forms out of only, and only the characters literally introduced in the film universe.