No doubt, over the last 10 years:
Jordan Minor
Judge Culpepper
Noah Cain
John Dunmore
TJ Jones
Kevone Lee
Caziah Holmes
Cam Miller
Zane Durant
Jon Mitchell (assuming he enrolls)
The problem has been getting them to stay. Thus far, every one of those guys has transferred out (Minor, of course, never suited up due to injury/health) - remains to be seen on Miller, Durant, and Mitchell.
The last FLA kid to actually stay at PSU was Omani O, from the 2014 class.
To your point though, prior to Omani, who was the last FLA kid? John Wilson, the big OL? 20 years ago?
Aside from Omani. the last FLA kid to make an impact? Wasn't there a pretty good LB on the mid-90s teams? Can't recall the name. But it has been a long time.
EDIT: Was it Willie Smith? Any since then?