Gaia data picks a winner among dark matter halo shapes

Using four Gaia DR3 rotation-curve compilations and testing seven dark matter density profiles against three baryonic models, the analysis ranks the Einasto profile as the preferred fit in most dataset-model combinations. Cored profiles — those with a flat central density rather than a steep central cusp — also outperform the standard NFW profile, adding weight to the long-running 'cusp-core' debate. MOND, tested with three interpolating functions, fares worse than the leading dark matter profiles across the board. No single baryonic model stands out as decisively better than the others.