Dissection of the ‘non-bar’ stars into inner-thick disc and spheroidal bulge populations. Top: Z_max-ecc plane showing distribution of the spheroidal bulge (black), disc (magenta), and bar (blue). Bottom: MDFs of the spheroidal bulge, thick disc, and bar components. Note the very similar MDF of the spheroidal bulge and the population of stars in X₄ orbits, and how distinct these are from the bar population. All nonbar populations seem to be contaminated by stars in bar-shaped orbits at high [Fe/H].