Characterization of the binary categories defined in Sect. 4. The panels display the CMD projection of the RUWE, RV Variable, NSS, Kepler + Gaia EB, SB9 + NEA + HGCA, and WDS binary samples, respectively. In all the CMDs, we show the separation between MS and evolved stars as guidance (dashed fuchsia line). The number of systems in each category is summarized in the bottom-right corner. The CMD projections help to illustrate the selection effects of each category (see Sect. 4 for details).