(I'm going off of Musical canon) So, Green, Red, and Blue are the Heathers, Vio is Veronica, and Shadow is JD. I feel like those would be the best roles for them to take, since Veronica and Vio are both very intelligent, and Vio would be the one in the group who could forge handwriting, and Shadow and JD both die directly after being redeemed (in some way.) JD sacrifices himself and so does Shadow. The Links as the Heathers work too, since both groups have the Leader, the Asshole, and the Softy

TANGLED au but Shadow is rapunzel and gufuu/vaati is mother gothel (did I spell her name right lmao)

guys, guys, guys. h e a t h e r s a u

AU where shadow's right eye randomly drops at times and he gets frustated because of it

About the idea of an au of swapping shadow's and the hero's roles (a couple anons sent you asks about that earlier), you will actually find a drawing of that on the tumblr blog kaenith (bit far down in their four sword arts, but it's cool.) You should definitely check out their art if you haven't already. (It's my favourite four swords blog if you haven't guessed.) (Also feel free to ignore this, I'm just being a nerd).

Au where everything is the same except Valensuela and link's dad are bi and pan and in a relationship 😂😂

For the hamilton au I always thought of Aaron burr as Vio and Alex is either Green or shadow (cause of the betrayal and the duel thing he had with green) Hercules reminds me of Blue cause I do headcanon him to be good at sewing and spying (he spied on the British lmao but cause of the spy thing it can be Vio cause of what he did??) red is john cause both are the best and kindest and you can fight me on it haha, Zelda is Angelica and Erune is Eliza. King George can be Vaati or ganon