I'll check out the 3rd Ed, but I don't have the Angels of Death 'Dex.
I have it but I do not have a whole lot of time so I'll add what I find...I don't have time to check it against your list for duplicates though I know that the main characters are.
Codex: Angels of Death
P. 16 Chaplain Argastes is quoted in a call out box.
P. 92 Commander Dante (who, "has ruled the Chapter for over 1,100 years!" And I had thought that was how old he was.)
P. 93 Veteran Sergeant Cleutin (rumored to have been Commander Dante's Scout squad sergeant)
P. 94 Chief Librarian Mephiston (Brother Calistarius befor conquering the Red Thirst)
P. 96 Apothecary Corbulo, Sanguinary Priest
P. 97 Brother-Captain Tycho (Erasmus Tycho)
And that is what I could find.
I will add, just because I am in the book, that they list the names of the first 10 terminator squads. These names, along with the squad numbe appear on the Sergeant's banner.
The codex lists the 1st Veteran Company as 20 Terminator or 10 Veteran Assault squads. I think it is interesting that they use the word "or" as this implies one or the other and not a mix. Also, you would think the Librarius would have better records because they are sure about all the rest of the Companies.