The article from The Dragon actually covers the bulk of what was released for the line. It's mostly a selection of dwarves, elves, orcs, goblins, and other humanoids. Later on some sets of trolls, ogres and ogre magi would be released, as well as a selection of demons that included minis for Orcus and Demogorgon.
Here's the first ad below:
|Click to get a better look|
I won't go through and look at every miniature listed there, but I'll put up an example of each type of humanoid represented.
|The High Elf King and the Wood Elf King|
|Gnome with spear (painted)|
|Hobbit with sword (painted)|
As far as the PC races go there's nothing out of the ordinary (although I suppose gnomes don't become a PC race until the Player's Handbook, which is about a year away). The main thing to note is the difference between High Elves and Wood Elves: the former are armoured in fine regalia, while the latter are much more lightly armed and rustically dressed.
The gnoll shown here definitely has the beginnings of the hyena-headed look that will be firmly established when the Monster Manual is released.
|Goblin with sling|
|Hobgoblin with partisan|
The goblins aren't particularly memorable, but the hobgoblins have the distinctive style of armour and helmets that they'll be depicted with through much of 1st edition AD&D.
|Kobold with axe (painted)|
Now that's a classic dog-faced D&D kobold if I ever saw one.
|Orc with kris-headed spear|
Finally, the orc is pig-faced, and very much looks like the kind in Dave Sutherland's art, as already seen in Swords & Spells and the revised cover of the original D&D boxed set.
All of the above images are courtesy of DNDLead.com, which is a great site with what looks to be a pretty comprehensive look at the history of official D&D miniatures.
Despite the lack of sculpting detail in the figures above, it's immediately apparent when you look at them as a whole that they're from D&D. Several of the humanoid figures look like Dave Sutherland drawings, and each type resembles its counterpart from the Monster Manual. The release of that book is just a few months away, so I suspect that Minifigs either had access to its illustrations or was given a style guide of sorts with Sutherland's art. Regardless, what we're seeing is another step towards the consolidation of D&D's visual identity.
I haven't covered the ogres, trolls and demons yet; I'll get to those when their ads pop up in The Dragon. I also see that Minifigs did some World of Greyhawk minis circa 1980, so I'll cover those when the time comes as well.