Personally I can see asuma's kid lee's kid and bolt
Asuma's son because shikamaru would be his mentor mentally training him into a genius on top of being a descendent of the sarutobi clan making him an efficient fire jutsu user
Lee's kid because of his abilities in tiajutsu and considering that rock lee started training around the age of eleven I think he should be able to open his fifth gate at an younger age than his father and depending on his mother he might be able to use ninjutsu as well
Bolt because he is going to inherit the rasengan in all versions and if kishi doesn't troll us to deat he'll get the byakugan as well being able to use the eight trigrams(not saying it will happen) and maybe get the other half of the kyubii chakra if naruto doesn't already have it
Asuma's son because shikamaru would be his mentor mentally training him into a genius on top of being a descendent of the sarutobi clan making him an efficient fire jutsu user
Lee's kid because of his abilities in tiajutsu and considering that rock lee started training around the age of eleven I think he should be able to open his fifth gate at an younger age than his father and depending on his mother he might be able to use ninjutsu as well
Bolt because he is going to inherit the rasengan in all versions and if kishi doesn't troll us to deat he'll get the byakugan as well being able to use the eight trigrams(not saying it will happen) and maybe get the other half of the kyubii chakra if naruto doesn't already have it