versus L_z action space for our complete sample. Empty circles are disc stars in the solar vicinity, full black circles indicate targets observed at R_GC ≤ 7 kpc or R_GC ≥ 9 kpc, and circles in shades from yellow to maroon are OCs. The three retrograde halo stars are colour-coded according to their ⁷Li content (see Fig. 9). The loci of Gaia-Enceladus and sub-Gaia-Enceladus stars (see Feuillet et al. 2020) are highlighted.