There are a some TUs in the final game that aren't present in the prototype build, so we don't know what the source files for these TUs would have been called. However, since the build process puts TUs in alphabetical order, we can guess what letters they start with.
Each unknown segment will need to be researched using Ghidra to determine what parts of the game its code is related to, and given a creative name based on that analysis.
There are a some TUs in the final game that aren't present in the prototype build, so we don't know what the source files for these TUs would have been called. However, since the build process puts TUs in alphabetical order, we can guess what letters they start with.
Each unknown segment will need to be researched using Ghidra to determine what parts of the game its code is related to, and given a creative name based on that analysis.