B3LYP is included in our testing due to its historical and ongoing significance, yet we find that its performance is generally similar to the B(20)LYP that uses the same fraction of exact exchange but fits within the ansatz defined by in eq. 2. All B3LYP and B(α)LYP calculations reported here include the D3 dispersion correction, in its original "zero-damping" form. In addition, we consider the meta-GGA functional ωB97M-V, 147 which is unrelated to B(α)LYP but is arguably the best all-around density-functional approximation available today. It serves here to set a baseline for how small the errors can be made for modern DFT reaction barriers and thermochemistry.