On the left is a 25pc set of Gearwrench long-pattern metric, 6mm to 32mm, on OEMTOOLS 22218 35 Wrench Organizing Rails.
I will say that while they are fine and get the job done, I personally don't like those rails all that much as they keep all the wrenches the same distance apart which is a little too close IMHO for the largest wrenches. That said, it's sharktooth-style rails really do pack a lot of wrenches in a really small footprint. I had to go with that style to get that set on the left to fit.
On the right I have a 19pc set of Gearwrench long-pattern SAE, 1/4" - 1-1/2", on the right-side set (rails #3 and #4) of the Ernst Manufacturing Wrench Rail Set, 40 Tool 4pc set.
I like the Ernst rails much better as they are meant to store two sets of wrenches organized just as I have mine, one set facing forward from smallest to largest and a set right next to it from largest to smallest. The spacing is more practical. Unfortunately my metric set had more than the 20 wrenches each holds or rails #1 and #2 be holding that set too. It does sit up a bit taller than the OEM rails though so the Ernst style may not be the best choice for you if drawer height is a concern. The drawer height these wrenches are in is 3-1/2".
The OEM 35-tooth racks were longer than my 18.5" drawers so I cut them to fit. Because they are evenly spaced they are meant to sit at 90 deg from the drawer front. You can put a slight even angle on both of them in a bit of a V-shape to try to accommodate longer wrenches and shorter wrenches but it just tightens up the spacing between them. What I had to do stored like I have them was use an extra piece of what I cut off to go 3-wide with the rails for the largest wrenches in the back.
The Ernst racks include two sets of rails that hold 20 wrenches each, and each set has one rail that sits 90 deg from the front and the rail next to it is longer so it will sit at a ~45deg angle so that the 4 rails form a pattern like this:
l\\l or
l//l so that you can put two sets of wrenches next right to each other in the same way mine are laid out. I like this layout as it makes a much better use of space in a drawer than the standard V-style wrench rails.