Otoharo!
I remember when I did all those things FK described while learning. It seems a matter of "catching on" to it.
Now, I keep my eyes closed, and see lights which I have learned to identify, including reiki.
With eyes open, I see my own aura when looking in the mirror. I see my guides as lights that are positioned and stay in a certain position around me and appear as a part of my aura but they are not me.
Others I have seen have been a hodge-podge memory. that is, I seldom pay any mind to those things now. I recall when a certain young leader (in an Inner Peace Movement retreat) standing before us and all the time he was speaking a man (as a dark shadow but the shape of a man) stood at his right shoulder, that is, just behind him. I asked the young man about this. He grinned and said he suspected it was his father who is curious about all these things he is doing these days.
Each occasion has been individual, that is, not common to any other.
The training i had was in Inner Peace Movement. We experienced some of our other lifetimes.
Once you get the hang of this, it is simple. We have been trained from childhood not to see.
finality