Next, we examine the DGH-L predicted by the hybrid counterparts of GGA and meta-GGA DFAs more closely, despite their inferior performance with regard to SCO behavior. All Becke three-parameter GGA hybrids, i.e., B3LYP , which have aHF of 0.20, strongly favor HS states with average DGH-L between -6.7 to -10.8 kcal/mol (Supporting Information Figure and Table ). This HS bias is indeed largely attributable to HF exchange fraction, as the higher value (0.25) in PBE0 169 causes it to predict SCO behavior for only one complex (Supporting Information Figure and Table ). Despite this poor picture for Gibbs free energies, with DGH-L values predicting SCO behavior for very few complexes and B3P86 performing best (30% or 29 of 95), DEH-L values of these DFAs predict SCO behavior for up to 92% of the complexes (Supporting Information Table ). For the meta-GGA hybrids, we had noted good performance of TPSSh (85% SCO or 81 out of 95), and it slightly stabilizes LS states (average DGH-L = 2.0 kcal/mol) on average (Figure and Supporting Information Table ). Examination of the remaining meta-GGA hybrids reveals that all of them (i.e., SCAN0 170 , M06 171 , M06-2X 171 , and MN15 172 ) strongly favor HS states and predict few (≤14) SCO complexes, likely due to their higher aHF values (between 0.25 and 0.54, Figure and Supporting Information Figure and Table ). This reinforces the observation that the aHF value incorporated in a functional has an overriding effect in predicting the SCO behavior of complexes.