Logarithmic Galactic map of our sample of stars with high-α (left) and low-α (right) selections for the all-sky Gaia XP sample (top) and APOGEE DR17 sample (bottom), in the metallicity regime where the gradual spin-up in high-α vs the step function due to two different stellar populations in higher and lower metallicities in low-α is reflected the most: −1.3<[M/H]<−0.7. In the Gaia XP sample, we can see that the poor old heart or the proto-Galaxy is still present (contamination) in low-α towards the inner Galaxy, however, to a smaller extent than in high-α. This is not the case for APOGEE stars which have a much cleaner low-α population towards the inner Galaxy with the bulk of proto-Galaxy towards the inner Galaxy in the high-α Galactic map.