Integrals-of-motion projections for the MW GC sample coloured by our final six-family probabilistic classification. Left: E–L_z plane. Right: E–L_⊥. Colours and markers denote the assigned family (see the legend). We define the classification confidence using the maximum posterior probability (p_max) and the probability margin (Δp = p_max − p_2nd) between the two most probable classes. Objects are considered secure when p_max ≥ 0.80 and Δp ≥ 0.20, likely when p_max ≥ 0.60 and Δp ≥ 0.10, and ambiguous otherwise. For clarity, cluster names are shown only for the objects with likely or ambiguous classifications (see Table A.1).