Hertzsprung-Russell diagrams throughout the sequence of the selection steps presented in Fig. 2. The different steps are shown as follows: the sources at S1 whose absolute magnitude M_G is not corrected for extinction and Bp – Rp is not corrected for reddening are shown in black; the sources with an existing mass in the CU8 catalog and whose G and Bp – Rp are corrected for extinction and reddening are shown in green, and those that are moreover nongiant and without photometric mass are shown in red; and the final 9698 planet-candidate hosts are shown in blue.