...has an orange eye, according to ***********'s translation. Can we exclude relation with Toneri or should we just assume he took it from the mother's side?
It can't. If you watched the movie you would know that Toneri didn't come to the earth when Naruto and Hinata offered him, meaning no more Otsutsuki baby (unless we won't count the Uchihas, Uzumakis, Hyuugas and Senjus as Otsutsukis).