Jersey Flegg Team Updated for 2020. This list won't be comprehensive but is accurate for most players.
From the graduated guys I'd guess that Kula and Hazelton are probably the most likely to stick around. Given the Jets lack of hooker depth one of Millard/Scarpelli could get a look too.
2019 Team Members
Outside Backs
Vito Tevaga (2000)
Jonaiah Lualua (2000)
Jensen Taumoepeau (2000)
Jangala Bennet (2000)
Josh Delailoa (2000 ??)
Halves
Angus Ernst (2000)
Kai Broadhurst (2000)
Hooker
Isaac Longmuir (2000)
Prop/Lock
Franklin Pele (2000)
Thomas Giles (2001)
William Swann (2000 ??)
Zane Elsey (2000 ??)
Deighton Ieriko (2000 ??)
Back Row
Jack Boyling (2000)
Nathan Atkinson (2000)
Graduated from SG Ball (Born in 2001)
Eliah Veikoso (2001)
Elliott Moaga (2001)
Marco Talagi (2001)
Douglas Levi (2002)
Kyle Pickering (2001)
Thomas Demeio (2001)
Kai Parker (2001)
Damon Smith (2001)
Zane Jegers (2001)
Alec Brennan (2001)
Graduated (Born in 1999)
Cooper Bowen, Jayden Millard, Fine Kula, Tom Hazelton, Monty Raper, Tom Harris, Jackson Stewart, Lachlan Scarpelli, Jonah Ngaronoa, Tom Caughlan, Jack Gould, Connor Luhan, Lorenzo Mulitalo