how to find how many members and who have different kind of badges?
You're going to have to check all profiles to find them all. Good luck 
Aren't those personal badges only temporary? I recently observed one on PowerGlow; I'm guessing it has something to do with useful SMF patching work. Others, I know, are contest badges.
Unless you wish to make something out of it, those are nothing. Those that won the pizza contest wear one as well. Don't lose sleep on it.