Comparison of $v_{0}(p_\mathrm{T})$ for inclusive charged particles in 10$-$20\% central Pb$-$Pb collisions at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV with IP-Glasma+MUSIC+UrQMD  calculations: variations in transport coefficients, $\eta/s$ and $\zeta/s$ (a), different equations of state from Ref.  (b), and initial conditions (IC) with (w/) and without (w/o) sub-nucleonic fluctuations (c). The statistical (systematic) uncertainties are represented by vertical bars (boxes).