Pretty much an all-encompassing list so far (as of last night and early this morning) of all the QBs (notable or otherwise), RBs and WRs to enter the portal thus far + a host of guys at those positions who have not yet entered but are rumored to dip their tow into the portal:
InsideNebraska - Transfer Tracker: Top QBs, RBs, WRs as Huskers look to bolster 2024 roster
Transfer Tracker: The top QBs, RBs, WRs to enter the portal as Huskers likely look to bolster roster at each position.
nebraska.rivals.com