Positions of the nine sources for which we re-estimated extinction (see Sect. 4.2.3) in the colour-magnitude diagram. Red squares indicate the positions derived using StarHorse, while blue diamonds show the positions computed using our extinction estimates based on diffuse interstellar bands, averaging the results from the 5780 Å and 6614 Å lines. For comparison, we also show the positions of all sources in our sample using the SHBoost catalogue (black stars; see Sect. 6.1). The schematic boxes denote the typical locations of different stellar types.