Gaia DR3 CMD for 30 000 randomly selected objects with parallax errors less than 10% and tangential velocities greater than 145 km s⁻¹ (grey dots). Shown: BHB CMD selection region from Culpan et al. (2021) (turquoise outline); extended BHB CMD selection region (blue shading); hot-subdwarfs CMD selection region from Culpan et al. (2022) (yellow shading); white dwarfs CMD selection region from Gentile Fusillo et al. (2021) (pink shading); and Feige 86 (blue triangle).