your list is awful, "reality tv" for the most part is pretty garbage.  Hopefully I won't discourage you saying that, but the documentary genre has MUCH more to offer.  that said if you want good documentaries here are some of the best.  Documentary is my favorite genre, I have watched literally thousands of them.  These are the ones I will revisit.  These are the ones that might take a second viewing, maybe even 5-10 years later to really see how great they are, but they are great.  I'm going for a decent variety here, top of my head awesome stuff.  you don't need to know anything about them, the less probably the better.  The best documentaries are poetic, informative, opinionated, passionate.  They don't just show you something.  They tell a story and have a perspective.  They might change your mind.  They challenge you.  Here we go.   
"Leaving the Earth"  - from Season 2 of First Person, a series by Errol Morris.  The rest of the series is also excellent, but this episode is the best.
Hearts and Minds
Manufacturing Consent: Noam Chomsky and the Media - this took a few viewings for me but stick it out and revisit it.  Still amazingly relevant 2 decades after it was released.
Crumb
Koyaanisqatsi
Dark Days
Touching the Void
Roger and Me  - I know people love to rip Moore, and maybe he stretches the truth a bit but this is still a great movie, especially if you know the risk he took to make it and lack of budget.
The Staircase
The Bridge