Board Thread:Naruto Discussions/@comment-46725497-20200825191548/@comment-6769189-20200825201251

When it comes to the main branch it seems that any sibling who doesnt become the head of the clan is considered a branch member. They are no longer elegible/responsible to pass the title down.

As for Hinata, she had a unique situation since she was fairly old when it was decided that she sucked too much to be the heir. There might be some nepitism and/or Hiashi was already making cultural changes to the clan.