Mean dwarf populations of isolated MATLAS-like TNG50 fields, binned by the 3D distance between target hosts and their closest bright companion with a magnitude of M_K + 1. Black, blue, and green points correspond to samples of all MATLAS-like dwarfs, those with a radial velocity within 500 km s⁻¹ of their presumed host, and dwarfs considered to be gravitationally bound to their host’s halo in Subfind – error bars in their respective colours denote their 1σ spread. The upper panel shows the cumulative distribution of mock-observed MATLAS-like field realisations. This work’s adopted isolation criterion of 1 Mpc is indicated by the grey dashed line.