Which of the following ionic/molecular species does not...

Here only $\text{Ca(OCl)Cl}$ does not disproportionate in water at room temperature.
{\text{2NO}_{2} \text{+}{H}_{2} \text{O} \to {\text{HNO}_{3} \text{+}{\text{HNO}_{2} \mathop{→}_{\text{Disproportionation}\text{relation}^{\text{Room}\text{temp}\text{.}} {\text{HNO}_{3} \text{+}\text{NO}
$2C{u}_{( aq )}^{+}\overset{R. T.}{→}Cu + C{u}_{( aq )}^{2 +}$

Ca \left(OCl\right)Cl\overset{Water}{→}Ca^{2 +}\left(aq\right) + Cl^{-}\left(aq\right) + OCl^{-}\left(aq\right)