Board Thread:Naruto Discussions/@comment-26369387-20150924133530/@comment-5407586-20150924145609

Well, we don't know if the victims of Kaguya's IT had the Rinnegan reflected in their eyes too. If it were the Byakugan, then it would be sort of like the Six Paths of Pain, with the controlled ones having the same eyes as their master.

Not to mention that, in cases of genjutsu cast through the Mangekyō Sharingan, the victim doesn't apparently gain the Mangekyō design reflected in their eyes, but just the regular Sharingan. See Kurama controlled by Madara in the Valley of the End showdown against Hashirama.