that never arrived nephew hasn't had the chance to choose, yet. Chances are species will be extinct before I have a great great great great nephew. I only have great nephews so far.
Same time I only became a grandpa within the last year. So my siblings are only a great aunts while being 1 of 8 great grandparents.
Gee you really don't go the depths of genetic compounding on any topic. Just the issue debated. How superficial your character role has become.