Top left : distribution of α_max as a function of cluster age. Blue circles represent systems selected as significant rotators (Sect. 4.2). Bottom left : fraction of significantly rotating systems (N_rot/N_tot) as a function of age. Right : α_max distribution as a function of the clusters’ dynamical age. Stars and triangles are clusters identified as candidate rotators in the literature. Red circles are Galactic GCs from Dalessandro et al. (2024). The outlier GC (with α_max > 1) is NGC 6496.