The first column is an electron micrograph for each of the synthesized compositions. Columns 2–6 are selected EDS chemistry maps are present for each of the five-metal cations present in each system. Column 7 is an EBSD map of the grain structure, revealing the effect on grain size in multi-phase compared with single-phase compositions. Compositions are listed from largest to smallest ML predicted EFA. Scale bar 100 µm.