Is there a list anywhere?

So far I've only bought Imperial and then when I post a list people suggest cards I've never seen. I don't want to randomly pick up rebel scum, I'll buy what I must, just not randomly.

Check this site out, you can look at cards and it tells you where they come from, or you can look at expansions and it lists the contents

http://starwars-armada.wikia.com/wiki/Star_Wars:_Armada_Wiki

Look here:

http://starwars-armada.wikia.com/wiki/Star_Wars:_Armada_Wiki

You can search for single cards, categories (turbolasers, offensive refit etc.) or expansion packs

Excellent! Thanks guys.

That info is also in the database section of the warlord fleet builder.