Anyone know if Solidworks is capable of listing a full parts and grouping across columns on the second level sub-assemblies only?

See attached for clarification.

The columns accross (Radiant, Convection, etc) are Sub-Assemblies of the Top Level assembly

Each Item may be a part or sub-assembly of the Top level's 1st sub-assembly.

Some parts or assemblies may or may not exist in each Sub-Assembly (Conv., Radiant, Etc.).