SF of the three subsamples of AGN including a partition of sources not overlapping any other AGN subsamples: X-ray AGN (left), MIR AGN (center), optically variable AGN (right). Each subsample consists of two complementary subsets: one overlapping one or more AGN subsamples, and the other not overlapping any other AGN subsample. For each subsample we show the SF obtained from all of its sources (black dots), the SF of the overlapping subset (red diamonds), and the SF of the non-overlapping subset (blue stars). The panel corresponding to optically variable AGN includes estimates for the slope of the linear region of each SF, which can be identified in correspondence of the logarithmic range 1.0−2.6 for the baseline. The slopes are the best-fit lines computed via weighted least squares regression.