The List data task performs both subtotals and grand-totals on the same variables. In order to get subtotals on one set of variables and grandtotals on different variables in your final output, you would either have to use PROC REPORT or a DATA Step program.
Of the two choices, I would consider PROC REPORT to be the easier choice. There is no task, at this time, for PROC REPORT. So, you would have to use PROC REPORT in a code node to create this report.
For help with PROC REPORT, there is an excellent section in the documentation entitled, "How PROC REPORT Builds a Report". In addition if you Google for SUGI or SGF papers on PROC REPORT, you will find a lot of references. In addition for help with PROC REPORT and submitting code through an EG code node, your best bet might be to contact Tech Support.