Anyone can edit the Contributed Data sheet. I think anyone can create new sheets too, but not 100% sure how permissions work.
The Blocks Dump sheet lists every single block, showing first the numerical ID for that block, and then its name ID.
The Items Dump sheet lists every single item, showing first the name ID for that item, and then its numerical ID.
I’m sorry for the swapped order for each of the lists, but that’s as they appear in the decoded msgpack files, too. All the values have been retrieved from the decoded files using a custom script.
Lua is weird. It doesn’t use brackets for functions or have an end line character. I mean I suppose those are redundant and this way it forces people to use good formatting, since the formatting determines how it interprets code. Still, weird.