[Mg/Fe] and [Fe/H] abundances of the different substructures identified in this work, using data from APOGEEDR16. Filled symbols represent core members of the clusters associated with the substructure considered, while smaller open symbols are for stars that are “added” based on their Mahalanobis distance to each substructure (see Sect. 5.2 and Table 13). Chemical abundance trends of A (thick disc; purple) and GE (yellow) are shown in all panels to guide the eye. Colours are as in Fig. 14.