Generic Lehigh silhouette:
A Pedersoli Frontier/Cabela's Blue Ridge/Hatfield is to a Lehigh as a apple is to a pear. Both come off trees, both have seeds, both have a stem. But they look and taste different. If all you're looking for is a fruit, you're solid. If you want an Empire or a Cortland Apple, you'll never find it on a pear tree.
The features that seperate the different PA schools or accepted design sub-groups are critical enough that the Pedersoli's would be unique enough to not be considered a Lehigh. And, the term "Lehigh" covers some 80 years of gun building, exists within Northampton/Bethlehen/Allentown styles and there are lots of gray areas within that group. Further complicated with not all gunsmiths signed their work (during the Revolution it would have been bad business practice to have the British show up at your door with a captured rifle and begin asking questions . . . as you hung by the neck from the tree outside your burning house).
1st test for a Lehigh: Buttplate heel is inset within the buttstock wood on either side of the heel; no exposed metal on either side. (A subtlety that even Kettenburg gets "wrong" on some of his Lehighs).
2nd test: Barrel is inset so that more than 50% of the side flats are above the forestock wood.
3rd test: Bust of an Indian woman or Liberty Head is incise carved ahead of trigger bow.
4th test: Wrist is wider than it is tall.
5th test: Nose piece is sheet brass, not cast.
6th test: Sideplate ends with an arrowhead pointing towards the butt.
Not all tests work on all original Lehighs, but they are indicative and unique features. If you have a rifle with 4 out of 6 above, it
might be a Lehigh.
PA Longrifle schools described (click me)