Yep I understand well, so, the goal will be to find the figure (figures?) made with the lioncloth gap and like that we have the production year of the Savage He-Man? Sounds good.
But something is more easy again: simply check inside the arms of the Savage He-Man figures the numbers to know that
What I mean is: all the 1982 figures are using molds numbers 1 to 4 for their arms, I am saying that because my early Man-At-Arms and my early He-Man have number 1right & 2left (same molds), as my early Skeletor and my early Mer-Man have 1left & 2right (same molds again between them), early Stratos (blue bearb) 2right & 3left and early Beast-Man 3left & 4right, my early Faker 2left & 3right (nothing as been mixed I promise).
If all the Savage He-ManS have numbers like 5 and 6, it is a later produced figure because the molds 1 to 4 were replaced progressively by bigger numbers the years later.
If all the Savage He-ManS have numbers 1 to 4 max, it is a 1982 produced figure.
I can't check on my side for Savage He-Man numbers, I sold all of mines years ago lol