We used spin polarized calculations with default magnetic initializations (1 𝜇 " /atom) for all elements other than Fe, Mn, Co, Ni, Ru, Rh, V, Cu, and Cr. We found that the final magnetic states for Fe, Mn, Ni, Ru, Rh, V, and Cr clusters are particularly likely to depend on the magnetic initialization. To increase the likelihood of relaxing into the lowest-energy magnetic state for these elements we run multiple calculations with different magnetic initializations, as listed in Table . The calculations that yields the lowest energy is selected for inclusion in the QCD. Based on benchmarks on 2228 clusters of above-mentioned elements selected from an early version of the QCD, we found that this approach yielded the lowest-energy magnetic state more than 97% of the time. For clusters of Cu and Co, we find that the magnetic initializations with 3 𝜇 " /atom relaxed into lowest energy configurations in all of our benchmark calculations. Additional details of the magnetic initializations are provided in section 2 of the SI.