To Brett Kollman Foskey is a tier 3 edge rusher
Also, a list of 3 cone drills from a slightly random list of edge rushers with a 9+ RAS score:
My own view is that on the balance of probabilities, he's going to be closer to a Robin, 6-8 sacks a year guy. Probably the two best physical comps are Davenport and Clowney, and both are in that Robin category. Neither ever reached double digit sack totals, though came close a few times. Different athletic profile but Will Smith was in that same category and also had a higher 3 cone. If Foskey is a consistent, dependable and available edge getting 6-8 sacks per year this is a win. Time will tell. I suppose I have some optimism for potentially greater output because he did better than that in college. It's a different animal with a real variance in terms of quality of opponents, but without spending days reviewing film and understanding why, I'll just say it's possible he could do slightly better.
Also, a list of 3 cone drills from a slightly random list of edge rushers with a 9+ RAS score: