Well in Basic in the late 80s, your duffel bag was empty and use folded to be shaped, but not used as, a laundry bag, so there was no packing scheme for the duffel. Sizes ranged from small sizes to sizes that were larger than the smallest, what do you want when you say you want the sizes, the NATO sizes, the S/M/L/XL/..., shoe sizes, do you care about widths too? Size is pretty much irrelevant, because uniforms would get made to fit, or alternatives would be found. For example I did not get issued a work dress jacket in Cornwallis because the guy in front got the last one in my size, I got two combat sweaters instead.
Someone told me that the way the recruits where shown how to fold their gear in basic training was how the kit was lade out in the foot locker and duffel bag.
If what you mean by that is that the layout from Basic training continued after Basic, then that is incorrect. I'm sure some schools had a locker layout, but at CFSEME we had to have a "neat" locker, and no beer in the privately purchased in-locker beer fridges and the fridges unplugged during the day.
I have to wonder what the fascination is with kit layouts from Basic training. For most it was three months of ass pain (possibly followed by a further four months if you went to battle school), and then you went on with a normal life. This is not to say that you were not molded by and formed great friendships during basic and trades training, but the kit layout was really incidental to everything else.