I will also say that it's impossible to over-state the breath and depth of the varieties of experiences that stem from what is called schizophrenia. There are certainly groups of people who share somewhat similar symptoms, but even that is tenuous. Words simply can't adequately describe it.
Then there is the drug induced psychosis/schizophrenia that can be turned on and off, which is equally fascinating.
Meh, the brain is too complex for me to think about right now. We could study it for years and would only know a small fraction of what's going on.
https://en.wikipedia.org/wiki/Human_Brain_Project
https://en.wikipedia.org/wiki/BRAIN_Initiative
edit: should clarify, I agree with your premise. My point is only that we are studying it in these two huge projects
The lives of those that suffer from paranoid schizophrenia are well 'documented' in popular culture. One such item you may be interested in is the film 'A Beautiful Mind'. It is based on the life of John Nash, but keep in mind it is a dramatisation rather than a documentary.
There are also a number of 'simulations' on Youtube that may exemplify the horrendous nature of the condition, if you are so inclined to experience them. One such video is this: https://www.youtube.com/watch?v=0vvU-Ajwbok .
I hope I have not taken your portrayed interest too literally!