McFadden was chosen in the third round of the NFL Draft with the No. 68 overall selection, while Bryant was a seventh-round choice at No. 217.
Louisiana State linebacker Barkevious Mingo — the sixth pick in the first round — is the only unsigned Cleveland draftee.
Notre Dame safety Jamoris Slaughter (sixth round, No. 175) and Chadron State tackle Garrett Gilkey (seventh round, No. 227) previously signed their contracts with the Browns.
The 5-foot-9, 195-pound McFadden was a three-time All-Mountain West Conference honoree at San Diego State. He recorded 188 tackles and eight interceptions in 51 career games.
The 6-4, 265-pound Bryant played three years at East Central University. He is better known for his off-the-field problems, including arrests for selling marijuana to an undercover policeman and driving under the influence.