Sunburst charts displaying the fractions of evolutionary outcomes for mass-transferring binary systems in the grid over initial primary mass ranges of [4.8; 12.6) M_⊙ (left) and [12.6; 20.8] M_⊙ (right). Wedges with a percentage < 1% are not labelled. Top row: the inner level shows the principal outcome of the evolution (‘Accretor expansion’, ‘Runaway MT’, ‘L₂-overflow’, and ‘No contact’), while the outer level shows the ancillary outcome (‘L₂-overflow’, ‘Non-conservative MT + cannot eject’). Ancillary ‘No contact’ outcomes are incorporated in the inner ‘No contact’ category. Models in the ‘Numerical issues’ category are assigned a likely evolutionary outcome based on their initial mass ratio q_i and mass-transfer case, displayed on the sunburst chart’s intermediate level. The labels ‘A’, ‘Be’, and ‘Bl/C’ refer to Case-A, Case-Be, and Case-Bl or -C mass transfer, respectively. Bottom row: the inner level shows the percentage of Case-A, -Be, -Bl, and -C systems. We show the principal outcome per case on the middle level. The outer level shows the lower limits of the total fraction of stellar mergers and classical CEs per mass-transfer case.