The wood is a texture set, not procedural.

Just confirming this. The only thing that is remotely procedural is the tiling effect. :) I built this texture through a combination of Substance Designer, Bitmap 2 Material and Quixel Suite. The bare wood tiles a little better than the varnished one right now. When I have some time I will go back and edit the varnish so that a dark scratch that noticeably repeats doesn't anymore.  I do have a procedural wood texture I made loosely following a tutorial for Cycles on You Tube. That's the wood in the wine image I posted earlier.