More wild speculative guessing ...
D pipeline (six, by DOB oldest to youngest): Bast, Morrow, Benoit, Johnson, Dunbar, Ausmus <- and that's the order I'd guess they'd come in as departures occur (maybe Johnson over Benoit)
F pipeline (twelve, by DOB, old to young): Portz, Schmaltz, Mongomery, Bowen, Strinden, Kunz, Constantini, Blake, James, Panzer, Singleton, Spicer <--I'd guess that order also with maybe Kunz jumping over Strinden and Constantini jumping over both. (James is the wildcard.)
I think Johnson is Thome's replacement and Hedquist is Thome's.