Colour-magnitude diagram (CMD) of all H emitter candidates within 500 pc (Table 2). The 1494 sources outside of the red lines are flagged in Sect. 2.7 as being incompatible with a YSO location in the CMD. The equations to reproduce the lines are reported in Appendix D. The sources are colour-coded by accretion luminosity, using the accretion luminosity calculated using med-GSP-Phot extinction. Grey sources belong to the 1% of the sample which does not have med-GSP-Phot extinction.