The sprouts are separable for polyembryonic mangos. I've done this a few times. However, it is somewhat tricky, as you have to sift through the soil to inspect the embyro(s) with roots without damaging the roots, definitely an added risk.
You can theoretically get as many separate plants as there are embryos with a root.
The one in the first picture seems to have good separation potential due to larger spacing between the sprouts.
The one in the second picture may be a little more tricky to separate, as the sprouts are clustered closely together. Wouldn't be surprised if some of the sprouts are on the same embryo.
btw, for polyembryonic mangos, there is only one zygote. The rest of the "children" are clones.
Good luck.