The baseline ∆SCF procedure achieves a MAE of 0.2 eV as compared to experiment (upon inclusion of atomic relativistic corrections and using a converged basis set), which is more accurate than other functionals tested, although B3LYP and SCAN0 are competitive and ωB97X-V exhibits a MAE of 0.5 eV. The SRC1-r1 functional performs surprisingly poorly (MAE = 1.5 eV), despite having been parameterized for K-edge XAS using TD-DFT. STM-based methods are significantly less accurate but GSTM methods, which use more than one fractional-electron SCF calculation, can achieve MAEs of 0.2-0.3 eV for the same data set, using functionals including SCAN0, B3LYP, or ωB97X-V.