The Loaf Pinches are shaped to have a "bread loaf-like" profile. The sides of the holds run parallel to each other, forcing the climber to pinch. The contour around the sides has a bulge creating incuts to make the pinching action comfortable and more accessible when set on steeper walls.
Set #2 has subtle neutral to 1/4" deep incuts, which means you can either pinch these or you can't. The widths have a great range into the 3-1/2" size, which is the gold-standard width for most adults. 3-1/2" does feel wide for women and youth-sized hands.
You'll also find with this set that each side of the pinches differs from the other. One side is more positive than the other. Versatility is the name of the game here.
You can expect Set #1 to feel in the V2 range on vertical walls, V3 on 25-degree walls, and V6+ on 45-degree walls.
Set #1 is the most positive, and Set #3 is the least positive.
You may also be interested in these other sets of block pinches: