"Content Type" doesn't appear to be an available Data Field for a List. Is that true? The list I'm using has one content type + a "Folder" content type. I can see that the folder item is included in my filtered data. But the Group & Drilldown is having trouble. Anyway, my primary conern is that I can't filter on Content Type. How does one manage to have different charts based on content types within the same list?