The Kryon material goes into substantial detail on this subject.
http://www.kryon.com/seminar%20image...0page/DNA.html
The last book about this was exceptional.
http://www.kryon.com/k_66.html
The Q & A sessions from Kryon had a particular reference to Indigo Children at the end of this audio message that I found quite inspirational.
https://www.kryon.com/cartprodimages...ry-sat_11.html
There is quite a lot going on that most of us are unaware of. I hope these references are informative.
John