For the two outliers, PCL and CSSAX1, they have ionic conductivity on the same order of magnitude as PEO while having low fraction of charged carriers. Compared to PPM, these polymers have higher ionic conductivities and transference numbers on the same scale. The final two outliers, SiMEME and SiMEPR also have ionic conductivity on the same magnitude as PEO while having significantly lower fraction of charge carriers in the system.