1 is a lily- not edible
2 is a fern- not edible
3 is some sort of succulent- I was going to say ask Yvonne
4 I don't know this one either. I sometimes take samples to a local nursery for positive ID.
The original spider plant doesn't have the white edges, but spider plant doesn't have the thick brown stem in your picture, so I also doubt if it is spider plant.
Ok, I take it back. There is an all green spider plant, but upon closer inspection of your picture that's not it. Some sort of lily, like Tom thought. Maybe lily of the nile??
It is lily of the nile. I have those in my back yard. Sorry, I should have elaborated a bit more.
Mike, to the best of my knowledge ferns are not edible. Someone correct me if I'm wrong. Botany is not my strong point, although I am trying to improve.