d ∈ [0.7, 1.5] are "re-discovered" in the screening to further val-592 idate our approach. Interestingly, the BCSF-like structure is only 593 metastable with min ∆µ tent with the reduced stability of BCSF. For example, some Fe-596 lacking analogs not discussed in Ref. 48 but computationally in-597 vestigated elsewhere maintain low predicted vacancy forma-598 tion enthalpy but improve upon phase stability according to MP 599 phase diagrams. Furthermore, non-simple perovskite compounds 600 can be identified that display similarly desirable vacancy proper-601 ties and stability (Figure ).