Normalised numerical density of subhaloes as a function of circularised radial distance (r_circ/r_vir) for three substructure mass regimes: M_h < 10⁹ M_⊙ (left), 10⁹ < M_h < 10¹⁰ M_⊙ (centre), and M_h > 10¹⁰ M_⊙ (right). Results are shown for the CDM, NB, and FCT models, stacked over the 17 most massive host haloes. The shaded areas represent 1σ bootstrap errors. While NB shows an excess of low mass subhaloes throughout the halo, the FCT model appears to redistribute part of this population toward intermediate and higher masses.