Upper panel: different mass-loss prescriptions applied to a generic star with the same properties but varying T_eff for illustrative purposes, to facilitate the visualization of the predicted $\dot{M}$(T_eff) behaviors. Vink et al. (2001) rates are represented by white circles, Krtička et al. (2024) by white squares, and Björklund et al. (2023) by white triangles. Middle panel: comparison between different mass-loss rate prescriptions and inferred values for the sample stars (black diamonds) and OSGs from Bouret et al. (2021, gray pentagons). The fuchsia-outlined diamonds are the targets where we did not find a satisfactory fitting of Balmer lines. The applied theoretical values have the same symbols as the upper panel. The stars are ordered according to their T_eff in the upper axis. The lower axes show the spectral types of each star. Lower panel: similar to the previous panel, but showing the ratio of the predicted according to each recipe ($\dot{M}$_th) to our empirical determinations. The symbols follow the same encoding from the previous panels.