In the QUESTDB transition metal extension, excitations are split across 11 3d transition metal diatomics (CuH (9 excitations), CuCl (6 excitations), CuF (8 excitations), ScF (8 excitations), ScH (8 excitations), ScO (4 excitations), ScS (4 excitations), TiN (3 excitations), ZnS (6 excitations), ZnO (6 excitations), ZnH (5 excitations)) and include excitations of singlet-singlet, singlet-triplet, and doublet-doublet character. The methods used to calculate TBEs vary by system, but include FCI, high level coupled cluster (i.e. CCSDTQ) and composite approaches. The reference work also includes discussion of performance of CASPT2 and NEVPT2 with manually selected active spaces, where they show mean absolute errors (MAEs) of 0.12-0.14 eV relative to their TBEs. We will use the 0.14 MAE reported for strongly contracted-NEVPT2 (SC-NEVPT2), the implementation of NEVPT2 in PySCF, as our point of comparison. Throughout the remainder of this work, all uses of NEVPT2 refer to SC-NEVPT2. In the reference work, the manually chosen active spaces range in size from (4,10) for ScH up to (12,15) for CuH and CuF. We highlight that this previous work tested a range of active spaces for many systems, with the one with the best agreement with the TBE energy being chosen as the correct active space, potentially biasing the active space selection procedure.