Fraction of stars with v sin i higher than 200 km s⁻¹ as a function of log(Z/Z_⊙) binned by stellar mass: 1.7 < M/M_⊙ < 2.0 (blue), 2.0 < M/M_⊙ < 2.5 (green), and 2.5 < M/M_⊙ < 4.0 (orange). The Galactic A-type star sample from Zorec & Royer (2012) is marked as a gray point with assumed solar metallicity. The red line represents the relation found in OB-type stars from Ramachandran et al. (2019), with SMC data from Martayan et al. (2007b) and Ramachandran et al. (2019), LMC data from Hunter et al. (2008), Dufton et al. (2013), Ramírez-Agudelo et al. (2013), and Ramachandran et al. (2018), and MW data from Dufton et al. (2006), Bragança et al. (2012), and Simón-Díaz & Herrero (2014).