Cosmic SFRD. The values obtained by integrating the luminosity function of our RS-NIR-faint galaxies are reported in purple. The values obtained by integrating the observed range of luminosities are shown with full squares, while the empty boxes report the values obtained by integrating the LF on the full range of radio luminosities. The figure shows, for reference, the SFRD computed by Madau & Dickinson (2014) on “optically bright” galaxies (dashed indigo line), and those obtained by Behiri et al. (2023), van der Vlugt et al. (2023), Enia et al. (2022), and Barrufet et al. (2023) (grey boxes, purple diamond, grey points, and green squares, respectively) for their “NIR-faint galaxies” selected in the radio and with JWST.