All very true Mr. Zorg.
When I think of a "good" lump charcoal, I think of one made from dense Argentinian hard woods. Jealous Devil, or as I don't especially care for the large blocks, Kamado Joe Big Block charcoal. If they aren't available, then I'll also use B&B in a pinch.
I stay away from Royal Oak as it is literally junk, and BGE which is or was made by Royal Oak. I also stay away from Cowboy for various reasons.
FOGO is ok, but it pops and sparks a bit too much IMO.
As for briquettes, especially Blue bag Kingsford and others which use binders, I stay away completely as the smell and taste of Kingsford blue bag, to my nose and tastebuds, leaves exactly the taste that the original poster in this thread describes.
Hope that helps with what I consider a "good" lump charcoal. Other opinions on this will vary of course.
As for placement of the wood. Coming from Kamados and other cookers, among them two WSMs, it is my experience that WSMs, much like Kamados, tend to burn "dirty" with a propensity towards dark smoke which takes longer time to become thin blue smoke.
I have found this matter to be compounded when bargain brand charcoals are used, and found it to be especially concerning, when wood which may or may not be properly seasoned, is placed on top of that cheap charcoal.
Best way in the world, and a "sure fire" way, no pun intended, to get prolonged periods of dirty smoke in a
WSM.
For me, well seasoned wood, under a "good" quality lump charcoal has been the best way to get and keep thin blue smoke in a
WSM in the shortest amount of time.
I follow a lot of the tips that Harry Soo offers. Thus I use the charcoal that I see him using and I build my fuel bed in the manner which he does, with the wood on the bottom. I also control my temps using the top vent primarily as he suggests. I've gotten good results following this pattern.