Distribution of the five most important features for the RF5 classifier (see Table 3) for known sAGN2 (light blue) and Donley non-sAGN (magenta). These are not included in the LS of our RF5 classifier, hence are part of the unlabeled set. We also show the corresponding distributions for sAGN1 (yellow), stars (dashed gray), and inactive galaxies (thick black) in the LS. The chosen bin size for each histogram is the one providing the best visualization and, when possible, separation of the distributions.