Point cloud of successful combinations of lensing and stellar mass profiles on the c-M plane for lens J0946 representing the success rate. The colour scale indicates the MAE of the fitted models, where lower values correspond to a better goodness-of-fit. The 95% (68%) kernel density estimate contours are shown in blue (black). The solid grey line represents the c-M relation from Leier et al. (2022), while the dashed line is from Buote et al. (2007). The inset displays the frequency distribution of successful realisations as a function of the IMF slope, with very bottom-heavy IMFs leading to dark matter profiles that result in unsuccessful fits.