Notes. Parameters of the “Menon grid” (MESA v. r10398, v. r15140) and the “Bonn grid” (Marchant 2017) (MESA v. r8118): P_i (days), M_1, i (M_⊙), M_2, i (M_⊙), q_i, and α_sc are respectively the initial orbital period, primary mass, secondary mass, mass ratio, and semiconvection efficiency parameters, while f_contact/MS and f_{near-contact/MS} are the weighted fractions of CBs and near-CBs with respect to the MS populations in the individual grids, respectively, along with W_grid/W_{massive binaries}, which assigns the relative contribution of each grid to the complete massive-star binary regime. These parameters are further explained in Section 3.3.