The mod includes, at the time of writing, 7 builds for spawning. Some of those that are mentioned in the ContentDB description, such as the Mall, are actually only referred to because the description seems to be a copy-and-paste job from the author's earlier mod "The Build Spawner" for Minetest Game. Go and read my review for a detailed explanation of why this mod and its original cousin are not much more helpful than just having the schematics in your world directory, and what a good mod would have.
I appreciate that the author wanted to provide support for more than one game. Care was taken to select the right equivalent nodes for Mineclone2, which is not always a straight 1:1 mapping. However, care should have been taken to port over all of the schematics from the original and keep the collection up to date - adding any new schematics for one to the other. The schematics for this game do look better, though that's in part because the base texture pack of Mineclone2 is a bit nicer than Minetest Game.
What I would like to see from the author in terms of functionality from the original mod - previews, rotation and so on - I mentioned in the earlier review. What I would like to see additionally now that multi-game support is considered, is a library mod from the author and an API. It would be relatively easy to make a core library that registers schematics, and has the functions for placement previews, player-made schematic saving, and so on. Then each pack mod would be as easy to add, with fewer lines of code, just a name, icon name, placement offset and so on.
I could definitely recommend the mod(s)/pack if at least some of these issues with useability and completeness were addressed. Making builds, placing them into a collection, sharing your builds, placing your builds again later should all be straightforward, and people will have all of that if the Build Spawner mods are improved.