Number of clusters per redshift interval Δz_λ = 0.05. For catalogs created in this work (blue), we used the best redshift z_best, and for literature catalogs, we used the published redshift z_lit. Each panel refers to a different cluster selection method. The smoothed histograms were obtained by summing over the redshift posteriors of all clusters. For better visibility, the distributions were additionally smoothed with a Gaussian kernel with a standard deviation Δz_λ = 0.04. For the eRASS1 catalog, the upper border of the filled region refers to all 12 247 clusters, and the lower border refers to the subset of 10 959 clusters with z_λ < z_vlim. A richness cut λ_norm > 16 and a limiting redshift cut z_λ < z_vlim were only applied to the optically selected combined LS DR10 south and LS DR9 north catalogs (LS N+S). That makes them comparable to the DES year 1 catalog, which has a consistent richness cut of λ > 20 applied (see Sec. 5.4).