Some nice ideas here. A useful expansion of the 5e MM Orcs, with a good range of CRs and short flavour-paragraph descriptions of the different varieties. I was looking for some lower-level orcish options beyond the 5e MM for a mass-combat attack on a barbarian encampment, and originally turned to my first-edition AD&D MM (back when most humanoid monsters got detailed tribal descriptions, from the numbers of young at home through to the ruler, guards and other important individuals). When I found this though, I gave up reworking those earlier orcs for 5e, as with a couple of extra home-brew variants, this is close to exactly what I was looking for!