Your auratus is either female or a juvie. The others - can't help. Your lighting temperature is throwing the colors of your RZs, which don't really look like pure RZs anyway since their fins are so intensely colored, so I can't tell if they're actually orange-orange or peach-orange. If they're orange-orange, female. Peach-orange, male. Assuming they're pure.
YLs can't really be sexed without venting. Don't even know what your blue guy is.