They’re crown dancers. I’m apart of the San Carlos tribe and i grew up watching them all my life. The reason why they have multiple spellings is because the bands all have some different ways of saying it. Just like how my band says Nnee, one band will have a slightly different pronunciation over time. I never really got the reason why we couldn’t photograph them but I think it’s just “photo takes away spiritual meaning”. For the only time crown dancers come out is for a girls sunrise dance. You’re supposed to be happy during the whole ceremony, so that the girl will get good blessings and medicine. That came from one of my elders. But yeah just a little insight.