RNC defenatly a blood choke, defenatly a pressure point.
in my old system part of what we trained in is called kyusho jitsu, we did losts of practical and advanced pressure point techniques, you can stike people arms and legs in certian places and incapacitate them or buy yourself enough time to over whelm them with something else. we also traing in knock out strikes to the sides of the neck and sometimes the chin, all open hand and very effective. http://www.kempo.org.pl/eng/multimedia.html
there are some videos of tiaka oyata, this is just one site with some of him.
there are pressure point techniques that would work in mma, if someone trained in them