>>76809385
>6 movements possible
More than that if accounting for all variations in humerus angle, the shape of the ribcage, and the shape of the spine.
>list of essentials: high row, linear/mid row, lat pulldown, pull over, low row, and long pull.
It's funny. Yates set the standard for back in Olympia and he never touched high row, low row, or long pull. His routine is more basic. Moreover, much of the content even of his routine is just covering all the bases for judging standard. In reality if you want a thicc back, you get it from the basics: heavy chinups/pull ups, heavy barbell rows, heavy deads, and heavy shrugs. Everything else is for detail or covering weak points which you don't discover until after you've gotten the size.
>>76809547
>pullups > chinups
They're pretty much identical for training the lats if properly performed. Chin ups are just use the biceps a bit more.
>the thicker the grip u need to hold on to
Good for grip training. But the point of chin ups is to train the lats. You don't want your grip failing before your back.
>sumo deadlifts
Just do a standard deadlift. Sumo only exists to reduce rom and improve leverage so that tiny guys can cheat during powerlifting and get bigger numbers than they normally could. If you want a deadlift variation for the traps especially, do above the knee rack pulls with heavy weight. Much heavier than you could ever deadlift.
>front squats put immense load on the lower back
FTFY