The short answer is, "No."
The long answer is that a given manufacturer might call a certain gun "Skeet" and offer different dimensions from that gun in "Field" or "Sporting" trim.
For example, a Browning Citori XS has a flat comb (no drop) and the Sporting versions have a dropped comb. A Beretta 682 Gold E Skeet and Sporting buttstocks are the same basic dimensions, but the Skeet has an adjustable comb and the Sporting doesn't.
Beretta's Competition line has slightly fatter and taller buttstocks than the Field guns, palm swells on some, etc. Browning's Sporting guns typically have vertical pistol grips vs. more gradual bends in Field models of the same gun, like the 625.
These differences are arbitrary, though. You can't make a general statement about what's what.