Final NS spins ($P_{\mathrm{spin}}^f$) versus final NS masses ($M_{\mathrm{NS}}^f$) in diverging binaries for β = 0.0 (blue colored symbols), β = 0.3 (orange colored symbols), and β = 0.7 (green colored symbols). We group the binaries by the initial NS mass ($M_{\mathrm{NS}}^i$) corresponding to different symbols (see legend). We also compare to the observed spin and estimated pulsar mass of the huntsman source 1FGL J1417.7–440 (2.66 ms and $1.{62}_{-0.17}^{+0.43}{\mathrm{M}}_{\odot }$, shown by the gray dashed lines and gray shaded area for the uncertainties; Camilo et al. 2016; Swihart et al. 2018) and the estimated pulsar mass of the huntsman candidate 2FGL J0846.0+2820 ($1.{96}_{-0.41}^{+0.41}{\mathrm{M}}_{\odot }$, shown by the vertical pink dashed lines and pink shaded area for the uncertainties; Swihart et al. 2017).