Supplemental Materials

The supplementary material includes the results in several systems. (1) The effect of $\chi_{pB}$ at fixed $\chi_{pA}$ and $\chi_{AB}$ at small $|\chi_{pB}-\chi_{pA}|$. (2) The effect of $\chi_{AB}$ at fixed $\chi_{pA}$ and $\chi_{pB}$ for the systems where both solvents $A$ and $B$ are either symmetric or weakly asymmetric.