OB-I diagram of the higher-redshift sample. The green diamonds represent the LEGA-C sample, the red triangles the VANDELS sample, the orange circles the 3D-HST sample, the magenta stars the MOSDEF sample, and the blue squares the FADO-JWST sample. The encircled symbols represent galaxies that are classified as AGNs by a separate classification scheme (see Appendix A). The grey contours represent the FADO-SDSS sample. The black dashed line is the separation line we defined in Eq. (2). The defined redshift bin is shown above each panel.