Single-point, linear-response TD-DFT calculations within the adiabatic approximation were conducted for all dissociation curves for a series of DFAs as listed in Table . For the study of the influence of FE we apply a series of PBE 138 -and BLYP 139-141based methods with varying amounts of non-local exchange. However, as lower-rung DFAs have shown to be unreliable for excited-state problems, we limit our final benchmarking study to global hybrids, range-separated hybrids, global double hybrids and range-separated double hybrids; the exact functional types are detailed in Table . Those DFAs have been chosen either based on popularity or known accuracy for excited states of organic molecules; see Ref. 66 for recommendations and insights. Note that time-dependent double-hybrid calculations require a conventional TD-DFT step for its hybrid portion followed by a configuration interaction singles with perturbative doubles [CIS(D)] correction as initially suggested by Grimme and Neese; 77 see Ref. 66 for a comprehensive, free-access review on this methodology and some of its latest advances.