Variability properties of the sample. Sources are ordered based on the ratio between the excess variances of the continuum and the Fe Kα line, . All four plots adopt the same color code as in Fig. 4a. Open black circles denote AGN without a special characteristic, magenta empty circles are radio-loud AGN, black filled circles are CTȦGN, green empty circles are dual AGN, and filled cyan circles are changing-look AGN. (a): normalized excess variance of the continuum light curves. (b): normalized excess variance of the Fe Kα line light curves. (c): the ratio between the normalized excess variance of the Fe Kα line and continuum light curves, where the four horizontal lines denote ratio for simulated reprocessors with diameters d_r = 0,2,10,100 ld, assuming identical 10 days power-spectral bend timescales. (d): ratio between the normalized excess variance of the simulated and real continuum light curves, with unity denoted by the red line. The light red shaded region denotes up to a factor 2 error in our assumed normalization of the simulated power-spectral model. Magenta empty circles are radio-loud sources, black filled circles are Compton-thick sources, green empty circles represents dual AGN, and cyan empty circles are changing-look AGN. Mrk 3 is both Compton-thick and radio-loud, while NGC 1365 is both radio-loud and changing-look. Plotted values represent the median of each parameter while the error bars correspond to the 16% and 84% bounds of the normalized excess variance distributions.