More info is needed to know exactly how you want to format your label?
Perhaps a image of you desired formatted label text would help?
As far as , complex vs compound, just use the general attribute of "Structure Type" which returns the type of the wall (complex vs compound)
Fire rating can be easily reformatted together with Structure Type within a expression. Once you do that, I would create a label favorite for reuse. This same expression can also be used within a schedule, as you wish.
Gerry
Windows 11 - Visual Studio 2022; ArchiCAD 27