Right turn on red being prohibited in Arizona is an internet myth, according to https://www.kgun9.com/news/local-news/misinformation-online-..., which links to the statute at https://www.azleg.gov/ars/28/00645.htm (paragraph A.3(b)).

It might be a myth, but it's certainly not an Internet myth. I first read about it in a Rand MacNally atlas in the 80s.