[wildcatfan]

OK, so you made me curious. Here are the "overlap" numbers that I got for Kappa. Like everyone else, I often vary from the other lists by one or two (I included colonies and international chapters):

Pi Beta Phi: 92
Kappa Alpha Theta: 91
Tri Delta: 84
Delta Gamma: 82
Chi Omega: 80
Alpha Chi Omega: 68
Gamma Phi Beta: 57
Kappa Delta: 57
Alpha Phi: 57
Alpha Delta Pi: 54
Zeta Tau Alpha: 34
Delta Zeta: 32
Alpha Omicron Pi: 30
Sigma Kappa: 29
Alpha Gamma Delta: 26
Alpha Epsilon Phi: 25
Phi Mu: 24
Alpha Xi Delta: 21
Sigma Delta Tau: 20
Sigma Sigma Sigma: 6
Delta Phi Epsilon: 5
Phi Sigma Sigma: 3
Alpha Sigma Alpha: 2
Theta Phi Alpha: 2
Alpha Sigma Tau: 1