Does anyone know the difference between these celestes on the cutting list?

Only ONE can be true Celeste Don  ;)

Don
Celeste BC = BC is the standard abbreviation for the very famous now closed "Belleclare" Nursery i assume #2 on BC list.

 Malta Black#35 - said to be Grandparent to the Celeste
as documented on there old list of figs.

 The  DiPaolas came here from Italy with a wealth of
knowledge.
There now retired and hopefully enjoying good health.

Here in this link you can see the two brothers and several forum members.
http://forums.gardenweb.com/forums/load/fig/msg1012441917825.html

They are all Celeste and have the4 same DNA, but came from different sources. It was a test started about 10 years ago.