OK, thanks to Jamie's clue, I think I got list 2...

They are the first commands of sci-fi ship's Captains.

Agamemnon; not sure, maybe the guy that talks a lot in Babylon 5

Stargazer ; Captian Picard

Deathshadow ; Captain Harlock

Valkyrie ; Commander William Adama

Tough without the internet! I use it for a back-up brain now

time for a nap!