Toomre diagrams of the 2721 γ Dor candidates with high-quality astrometric and radial velocity data, colour-coded with their orbital eccentricity. The upper and lower panels show the whole sample and a closer view of the sub-sample of stars parametrised by GSP-Spec, respectively. The dotted lines correspond to a total velocity equal to 50 and 100 km s⁻¹ with respect to the LSR value.