Two-dimensional UMAP projection of the manifold spanned by the parameters of our DHeWD sample, whose merger can result in the formation of BLAPs. One can see the presence of four distinct evolutionary scenarios, which are labelled in the upper left panel. The colour scale on each panel corresponds to a different parameter. Starting from left to right these parameters are: upper row: initial mass of the primary component (M_0, 1), which is the more massive one on the MS, the initial mass ratio (q₀), the logarithm of the initial orbital period (log P₀) and initial orbital eccentricity (e₀); lower row: the mass of the HeWD formed from the primary component (M_HeWD, 1), the mass ratio in the DHeWD system (q_DHeWD), the logarithm of the orbital period of the DHeWD (log P_DHeWD) and the logarithm of the age at which the DHeWD merger occurs (log τ_merger). We emphasize that the dimensions on both axes are not physically meaningful and their values are the result of a non-linear UMAP projection.