Comparison between the γ_sub inferred from observations with the PL model (see Fig. 4) and the inner slopes of subhaloes from the TNG50-1 simulation. In the latter, the slope has been measured for all subhaloes in H23 (see their Fig. 9). The bottom panel shows the distribution of slopes of all subhaloes (black) and two mass bins roughly corresponding to the range of the detections. The coloured vertical lines and shaded areas correspond to the observed values (Table 2). In the top panel, we show the cumulative distribution for all subhaloes and the second mass bin, and we report the corresponding fractions of subhaloes that are compatible with the observed slopes in the two mass bins, highlighting the one that better corresponds to the detection in each case with the horizontal lines and corresponding numbers.