Notes. Alongside Fig. C.2 and C.3, we obtained no substantial evidence indicating differences between AGNs hosting UFOs and those without. This suggests that all AGNs might be capable of hosting these outflows during their lifetime and their observability is linked to the wind duty cycle (see Sect. 4.2). The lower the logNHP values, the more statistically different the compared samples become. Meanwhile, we mark “x” when the difference between two samples is below the adopted significance threshold (logNHP > −1.30, i.e., the compared samples are statistically the same). The C21 sample has limited data and a comparison between sub-samples could not be performed, we thus adopt “/” for the respective comparisons.