OK, first off, Dark Strong Kentucky is a Licorice flavored aromatic. I do not taste any of the Dark Fired in it at all. But, I speak of my own tastebuds and will not argue with someone who says they actually tastes it. But, to me it is a balance of a subtle tobacco burley taste with the licorice topping. It is a unique taste, but I have wondered about the name, it is rather misleading in that it is neither really all that dark nor strong.
Black Pool by Esoterica (I know I know, almost totally unobtainable, but it is very similar)
Maybe try Sutliff's Great Outdoors is... kinda close?
Both of these are not flakes, but I am just going by my taste buds not the "look" nor composition of the blend.
I didn't think having actual dark fired was essential, since I cannot taste it at all. Nowhere near as good as MacBaren's ODF, IMO.