Smith is the third and final running back on the Chiefs' 53-man roster for the 2026 regular season, Matt McMullen of the team's official site reports.
Thomas (hamstring) did not participate at practice Thursday, Pete Sweeney of The Kansas City Star reports.
Jones (back) participated at practice Thursday, Harold R. Kuntz of Fox 4 News Kansas City reports.
Mitchell (undisclosed) remained a non-participant in Thursday's practice, Kris Rhim of ESPN.com reports.
Simmons (back) did not participate at practice Wednesday, Pete Sweeney of The Kansas City Star reports.
Jones (back) did not participate in Wednesday's practice, Charles Goldman of AtoZSports.com reports.
Walker (ankle) was a full participant in Wednesday's practice, Pete Sweeney of The Kansas City Star reports.
The Chargers placed Perryman (undisclosed) on injured reserve Tuesday.
Johnson is in line to be Kenneth Walker's backup for the Chiefs this season.
Smith (undisclosed) reverted to the Chiefs' injured-reserve list Monday, Matt Derrick of ChiefsDigest.com reports.
