no arms, no hams, no shoulders, no calves, no back width ?
you don't appear to know what "assistance" means. but lemme break it down:
squat assistance: box squats, pause squats, leg press, upper back stuff.
deadlift assistance: SLDLs, good mornings, shrugs, forearms.
bench assistance: shoulder work, pullups or rows, triceps, maybe some curls.
"back width", oh brother. i'll work on that along with trying to emphasize the depth of the cuts in my quads and really get those separations between delt heads.