Precessing (upper panels) and effective (lower panels) spin distribution of BBH mergers at redshift z = 0 for models A (left), B (center), and C (right) in the Tidal evolutionary case. We show the mass distribution resulting from isolated BBH mergers (blue solid line), 1g BBH mergers in GCs (yellow dash-dotted line), and BBH mergers in GCs, including hierarchical mergers (salmon dashed line). The black dashed line is the median value of the Gaussian spin model inferred from GWTC-3 (Abbott et al. 2023b). The gray shaded areas are the corresponding 90% credible intervals.