I don't know who the plastic skanks are but Manny, Moe and Jack from Pep Boys would be more iconic than them. Even the three stooges or ed, edd and eddie...hell, even the Marx Brothers are.
That’s the idea of the meme, nobody knows who the hell these people are and it’s fun to find better trios and here are some more iconic trios, Fives, Echo and Hevy from clone wars, Iron man, Captain America and Thor, and Legolas, Gimli and Aragorn