Radial distance and radial velocity of the primary satellite’s stars (coloured points) and DM (grey points). The top, middle, and bottom panels show examples of our early, GES-like, and mid analogue selections (see Sect. 3 for details). The bright satellites are shown with yellow stars, the dark subhaloes with a peak mass greater than 10⁸ M_⊙ with black circles, and those less than 10⁸ M_⊙ with black crosses.