Hmmm. I can agree with you as to the second half of the article (government in certain roles) that aren't really exceptions but special instances where the protection is lower. I'm certainly open to article title suggestions to resolve that, but I believe most of this can fit under a similar heading of areas where SCOTUS has found limited free speech protection. Any ideas for how to best phrase the title?
As to the other sections (false statements of fact, obscenity, etc.) all the sources I have looked at, both cited and not, characterize them as exceptions.