While reading this I thought of a series I watch. I don't like it and I don't want to watch it, I think there are too many gaps in the script, as well as too many inaccuracies in the interpretation of many things. But I keep watching it, as if to see how far they can go in their interpretations and how much more wrong it can get. It's called "The OA" and it's about people who have had near-death experiences and then come back to life. They call themselves angels.
I wouldn't play with that word too much, because it's quite dangerous, at least from what I've read, these entities aren't necessarily such good beings. And I admire you for speaking about such and other creatures, otherwise so frightening to humans, with ease and lack of fear.