Nuclear star cluster occupation fraction for our fiducial model as a function of galaxy stellar mass for all galaxies (solid line) and all galaxies hosting an MBH (dashed line). All M_* < 10⁹ M_⊙ galaxies hosting an MBH have also a 100% probability of hosting an NSC at creation. The data represents the NSC occupation fraction for the Virgo (orange circles), Fornax (white squares), Coma (gray triangles) clusters, and the Local Volume (green rhombuses) as presented in Hoyer et al. (2021). Our model fits the logistic function for NSC occupation at M_* < 10^9.5 M_⊙ of the same work (thin gray line). We stress that this agreement occurs naturally from the occupation of MBHs per galaxy (see discussion in Sect. 4.2).