  Several astrophysical scenarios have been proposed to explain the origin of
the of the population of binary black hole (BBH) mergers detected in
gravitational waves (GWs) by the LIGO-Virgo Collaboration. Among them, BBH
mergers assembled dynamically in young massive and open clusters have been
shown to produce merger rate densities consistent with LIGO/Virgo estimated
rates. We use the results of a suite of direct, high-precision $N$-body
evolutionary models of young massive and open clusters and build the population
of BBH mergers, by accounting for both a cosmologically-motivated model for the
formation of young massive and open clusters and the detection probability of
LIGO/Virgo. We show that our models produce dynamically-paired BBH mergers that
are well consistent with the observed masses, mass ratios, effective spin
parameters, and final spins of the second Gravitational Wave Transient Catalog
(GWTC-2).
