I don't get breaking them up in this way at all.
To goal (to me) is to look wide (from the front/back) and thick (from the side).
Wide = back (traps, too), shoulders, quads
Thick = chest, back (to an extent), hammies
I don't see the need to separate traps from your back.
"Look son, there comes a time in every man's life when he has to make a decision. Do you want to be big, powerful, jacked, yoked-up, have women everywhere want you and men fear you . . . or do you want to do crossfit?"