Smith will join the Chiefs after spending his entire career with the Tampa Bay Buccaneers.
Ford will arrive in Happy Valley with two seasons of eligibility remaining.
The Steelers selected Porter with the No. 32 overall pick in the 2023 NFL Draft
The selection comes after Sutherland signed with the Seattle Seahawks as an undrafted free agent on April 29 following the 2023 NFL Draft.
Shrewsberry is joining his father, Micah, in South Bend.
The Nittany Lions split yesterday's double header against the Hawkeyes.