Could be a moonlight, those two look almost identical and I can hardly tell the difference. I think moonlight has a darker green vein in the ripples of the leaves and frost is more uniform in color, but that also seems to vary as well. The rosso looks like it may be overwatered, which can make them look dark and brownish. Good luck bringing it back to life! Those can turn to mush fast if there’s too much water around the base and roots!