い, おこな, ゆ
The go radical and the go kanji are exactly the same!
"Go!" someone is telling you. "Go! Go! Go!" That person is こういち. He is holding his finger out, and pointing at your WaniKani reviews. "Go! Go!" Then, he over-enunciates the word "go" by saying "GYOU!!" (ぎょう).
Currently there are no similar looking kanji which exist in the WaniKani learning system