So basically:
manipulative: changing vote power, redirection, frame results, bus drive, refill, amp, etc.
protective: protect from kills, protect from rolecrush/block, etc.
investigative: alignment cop, role cop, watcher, tracker, etc.
preventative: roleblock, rolecrush, stop X from using kills, stop X from using hostile actions, etc.
creative: make one-shot, make fake WU, absorb used ability, other random stuff that make other stuff
amright?
@Ratchet