Scatter plot of specific angular momentum versus mass in the last epoch of the class II stars in the simulation (blue dots), and for observations of spatially resolved disks (Hendler et al. 2020; Cieza et al. 2021; Long et al. 2022; Stapper et al. 2022) (smaller red dots). The blue line is a least-squares fit (log y = (1.14 ± 0.07) log x + (20.7 ± 0.06)) to the blue data points, while the solid black line is the fit (log y = (0.86 ± 0.03) log x + (20.6 ± 0.03)) from the Eulerian analysis in Padoan et al. (2025) and the dashed black line a fit (log y = (0.71 ± 0.04) log x + (20.3 ± 0.02)) to the observations. The gray dotted lines are the specific angular momentum for a given disk radius (1, 100, and 10 000 au, with increasing j) as a function of stellar mass, using Eq. (29) in Padoan et al. (2025) for Keplerian disks.