There is no simple answer. You can measure the guns actual recoil by punching in data and doing the math.
http://www.handloads.com/calc/recoil.asp
By the numbers a heavier gun will always have less actual recoil everything else being equal.
Don't bet on the synthetic being lighter than wood. A laminated stock will be quite heavy, but 99% of the factory synthetics out there weigh exactly the same, or often more than the wood stocked versions. There is a reason Savage's lightweight hunter comes in wood only. The cheap plastic stocks are heavier than solid wood. You can get a lightweight aftermarket synthetic, but prices start at around $600 and go up from there, and that is just for the stock.
Felt recoil is far more complicated. Recoil pads and stock shape are more important than weight. Guns that have lots of drop like lever actons tend to roll during recoil and give you more muzzle rise. The comb of the stocks hit your cheek and are often more painful to shoot than guns that have more actual recoil.
Rifles with less drop recoil straight back and are usually more comfortable. Rifles with small buttplates concentrate the recoil in a small area and seem to recoil more than a gun with a larger buttplate.
With many very lightweight synthetics the entire stock flexes a bit under recoil and the good ones have much less felt recoil than many heavier stocks.
You have to also consider your own build and how you hold a rifle. Depending on your arm length, facial features, and build, a rifle that recoils worse to you may not bother another person.
Of those I'd say the laminated will be the softest recoiling. The plastic will probably be next, because I'd bet it weighs at least as much as the walnut and maybe more. You also get the benefit of the entire stock flexing a bit. The walnut will probably recoil the most because it is most likely the lightest,and will have less flex during recoil. Since they are all from the same manufacturer the stock shape is pretty close to the same.