Centrality dependence of $\rho \left(v_{\rm 2}^{2}, [ p_{\rm T} ] \right)$ (top) and $\rho \left(v_{\rm 3}^{2}, [ p_{\rm T} ] \right)$ (bottom) in Pb--Pb collisions at $\sqrt{s_{_{\rm NN}}} = 5.02$ TeV (a,c) and Xe--Xe collisions at $\sqrt{s_{_{\rm NN}}} = 5.44$ TeV (b, d). The statistical (systematic) uncertainties are shown as vertical bars (filled boxes). The initial-state estimations (ISE) are represented by lines, while IP-Glasma+MUSIC+UrQMD , v-USPhydro , Trajectum , and JETSCAPE  hydrodynamic model calculations are shown with hatched bands.