A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
There are no easy ways to do this. I can think of one way, documented below. It's very manual but could be automated with VBA.
Eric
Step 1: Start with your original data for the stacked chart as shown below.
Step 2: Create some dummy data (mirror image of original data with all zeros)
Step 3: Create a stacked chart
Step 4: Reformat the chart so series with same name have same formats
Step 5: Individually select and delete the top four legend entries, leaving the bottom 4