Known pulsating variable stars retrieved from published catalogues are placed in the observational CaMD, with symbols and colours representing types as shown in the legend (see Table A.1 for the references from the literature per type). All stars satisfy the selection criteria described in Appendix B. The background points in grey denote a reference subset of objects with a stricter constraint on parallax (ϖ > 1 mas), which limits the sample size, extinction, and reddening. The effects of interstellar matter and other phenomena (see text) are not corrected for. The condition on the relative precision of G_BP measurements introduces artificial cuts in the distributions of low-mass main-sequence stars and red (super)giants.