Five. I base this on science.

1: the leader. Mostly dead weight. Just runs the place but thinks he's important because of dick sucking from #2 & #4 below.
2: the lieutenant, who blindly follows orders of #1. Creates no original content. Gets made fun of by #3, but dick sucked by #4 and has fake authority provided by #1.
3: the snarky outsider who is not leader or lieutenant (85% of content created by this person). The best well-rounded, but least-appreciated member. Leadership above ignore this position because it's so clever that it's a real threat to them.
4: the forum whore. 10% of content created here. Plays #2-3 off of #1. Wins every argument somehow.
5: the whipping boy. Not creative, not having dick sucked. Adds in frustration and anger that #1-4 can make fun of. Lets everyone else know how far they can sink and forces others to strive to keep their place.