From left to right: initial condition space of the alternative zoom-ins for the zoom levels 5, 6 and 7, in inclination ι (y-axis) and true longitude λ (x-axis). As in Figure 3, the dots are colour-coded by the identity of the escaping particles. Red: 12.5 M_⊙. Blue: 15 M_⊙. Green: 17.5 M_⊙. Bottom panels: fraction of same-colour neighbouring particles f_col, out of k = 9 nearest neighbours. The black boxes show the boundary box of the next zoomed regions.