Generalised Lomb-Scargle periodograms of the activity indices from CARMENES (left) and HARPS-N (right), and S-index (bottom right) from APF, HIRES, and HARPS-N. In all panels, the broken vertical lines indicate the planetary signals at 8.9 (red), 28.6 (green), 38.4 (cyan), 101 (magenta), and 280 (orange) days. In all panels, the 10%, 1%, and 0.1% FAP levels are indicated by dotted, dash-dotted, and dashed grey lines, respectively. The vertical black dotted line marks the baseline for each dataset. We highlight the different scale in the y axis in each panel.