I haven't seen anyone sharing anything about what the unknowns do, thats why every label has Unknown on it.. It's up to the community to figure out which field is for what data as i don't know it myself.
The only 2 fields i know are Unknown01 and Unknown08 which are the ID and Name.
You can simply edit the Language.txt file and replace the "unknown" value with anything else like for example the first unknown for sure will be the ID, then you replace that first unknown with ID and it'll update the label when you restart the application.
It'll show like this: