Objective and complete ranks

Trying to give rushes a good guide to rankings with as much objectivity as possible (slash means about the same and rankings irrelevant starting at lower)

Top (mixes c4):
- AD/sig chi
- sig phi
- du
Lower upper (mixes upper mid/rare c4):
- DX/chi psi
- sig pi
Upper middle
- Zbt/chi phi
Middle (mixes lower and mid):
-lambda/pikapp
- PSK/phi tau
- Pike

Lower middle (mixes occassionally lower)
- Fiji/sae
-Ksig/AGR

Lower (no mixers but still big parties)
-Phi Delt
- DKE
- Sig Nu
-DTD
- delta phi (llenroc)

Lower lower (barely any big parties either)
- acacia
- KDR
- AZ
- seal and serpent
- beta
Probably missed a few others