I agree with other commenter here, "I Am" from the Origin soundtrack and "Māori Ki Te Ao". But also add to that list "New Light" (live in studio with the Levites) and "New Takeover" (before he had his stomach removed so he looks a little different). He also does a live version of "I Am" with the Levites but I'd recommend watching the official video first as it is epic.
So glad you enjoy his music. He writes and sings from his heart and soul about what is important to him and all people. We can't help but connect to his music because it sings to our hearts and souls ❤