As seen from this picture, the descriptor space clearly separates into defined regions of specific product selectivity. This suggests that the descriptors may also be suitable to screen catalysts for a desired product of choice. Particularly notable is also again the different impact of the two descriptors. The CO adsorption energy mostly the CO 2 RRfrom the HER-selective region. However, it has to be stressed that a large part of the descriptor map is relatively unexplored. This concerns for example Rh for we could not find any experimental data for CO 2 RR. Designing a metal catalyst with similarly strong binding of CO as the noble metals Pd, Rh and Pd, but less charging, meaning less positive PZC, might be a promising pathway towards designing catalysts with properties to higher reduced products. From our results, this could be for example achieved by the use of Ag-or Cusupports which direct the charging to the >2e -region.