The interesting thing is Biggie has nominated for the National draft whereas Cumberland hasn't (I'm presuming Noah will nominate for the rookie draft). So Biggie could be drafted and poached by another club in the National draft.
Can you just nominate for the rookie draft? not sure you can.
This is what the AFL draft nomination booklet says:
Q: If I did not nominate for the NAB AFL Draft, can I then nominate for the NAB AFL Pre-Season and/or Rookie Draft?
A: No, because part of the eligibility criteria for the NAB AFL Pre-Season Draft and/or Rookie Draft is that a player must have been eligible for, but not selected at, the NAB AFL Draft.
The only exception is a player who has been delisted from the Primary List by an AFL club, who can stipulate if their nomination form is to be held over for the Pre-Season Draft.Page 4: https://nabafldraftnom.com.au/images/form/booklet_mens.pdfUnlike Biggie, Cumberland didn't nominate for the national draft. So I presume he stipulated that his nomination be held over to the PSD/rookie drafts.