Whoa, holy shit, I thought these were in rights-hell! Looks like Collection Two is the entire series of Gold Box games (including Unlimited Adventures!), and Collection Three is the outliers: Dungeon Hack and Menzoberranzan.
And now the Krynn games are here! Alongside the Dark Sun and Ravenloft games.
...which makes me quite happy, since the only sets that were previously available focused on only the Forgotten Realms games! I'm particularly excited about the Ravenloft games, since I've been wanting to play those for forever.