Two projections of IOM space for the 151 GCs in our sample, colour-coded according to their associations with different progenitors (blue symbols mark the Main Progenitor, red is for Gaia-Enceladus, green for Sagittarius, orange for the progenitor of the Helmi streams, brown for Sequoia, pink for the low-energy group, and cyan for the high-energy group). For visualisation purposes, two clusters (Crater and E1) with extremely negative L_Z have not been plotted. Empty symbols correspond to tentative associations. The two star symbols mark the young and metal-poor clusters excluded by the Disc selection.