We advocate for the exploration of alternative parameters in feature engineering to predict ΔE, given the observed high correlation between k64 and rB. In Figure , we present an optimized parameter combination for predicting ΔE, where the pairing of k64 and rX proves suffice. This choice is substantiated by their non-correlated or minimally correlated nature within the current range of d 0 -metal-and lanthanide-based Mg chalcogenide spinels.