Which cambridge colleges weight the NSAA most/least highly?

This depends entirely on the DoS (Director of Studies) for that college, and they may change between years. They also, as I'm sure you're aware, take into account your entire application, and there may be multiple DoS's a college who each weight it differently. As such it's impossible to know an exact ranking unless you somehow worked in admissions for all Cambridge colleges.

Also, out of curiosity what is your plan if you were to somehow find a list (if it were even possible to compile one)? You sit NSAA after choosing your college so you will have no idea how well you will perform, and I hope you understand that you can't just slack off on revising for the test because your college puts less weight on that. The best strategy would be to do as well as possible on all parts...