There seems to be a good amount of undecided O-linemen, D-linemen, Linebackers, and D-backs in the transfer portal. The list below doesn't include Juco players or Div II or Div III players.
O-Line
Alex Gellerstedt, Penn StateZeke Martin, IllinoisRJ Proctor, VirginiaDrew Richmond, TennesseeReuben Unije, IllinoisLarry Boyd, IllinoisAndrew Trainer, Illinois Jonah Jackson, Rutgers Parker Braun, Georgia Tech Michael Eletise, Arizona Thiyo Lukusa, Arizona
D-Line
Malik Barrow Ohio StateTrevon Hill, Virginia TechDaviyon Nixon, Iowa Jauntavius Johnson, Auburn Zach Abercrumbia, Rice Davontae McCrae, NC State Allen Daniels, Purdue Reuben Jones, Michigan Ja'merez Bowen, Indiana Sione Taufahema, Arizona Jalen Bates, Arizona State Darius Slade, Arizona State Joe Babros, NC State
Linebacker
Oluwole Betiku Jr., USCDae'Lun Darien, Penn StateAaron Mends, IowaJaelan Phillips, UCLAGuy Thomas, NebraskaKam Jones, LouisvilleNadarius Fagan, Syracuse Loren Mondy, Arizona State Austin Smith, Tennessee Patrick Macon, Oklahoma State Layton Garnett, LSU Eyabi Anoma, Alabama
Defensive Back
Jarius Adams, RutgersTrey Creamer, IowaZaire Jones, VanderbiltYkili Ross, USCJack Leius, MinnesotaMarcus Lewis, MarylandBennett Williams, IllinoisAyron Monroe, Penn StateCameron Watkins, IllinoisSpencer Perry, South Alabama (former Notre Dame player)Nate Dalton, Arkansas Nick Harvey - South CarolinaAntonio Parks, ArizonaE.J. Thomas, Kansas State Devante Smith, Virginia TechTavyn Jackson, South CarolinaOctavius Spencer, UCLAJay Irvine, Oregon StateKyriq McDonald, Alabama
Source: https://247sports.com/Article/NCAA-transfer-portal-names-players-destinations-127866941/