Not every datablock can be found in scripts, because all the base game datablocks are in .dso files, which cannot be read by humans, only Blockland. (It uses a custom .dso version, so other TGE games will not read it)
If you found that here, it may have been a really old post, when Blockland was free, didn't have an add-on system, and .dso files were considered junk and were not included with the game.