Sheets offer the greatest flexibility as far as visual organization of data in a spreadsheet-esque view.
After selecting "Sheet" from the dashboard element dropdown, you will see a small blank chart with two blue "+" signs. Selecting either of these will add either a column or row with a blank label.
Type anything you'd like into either label and you will begin to see a spreadsheet take shape. Selecting a blue "+" between two labels will prompt you to select a data point.
Repeating this process, you can create a table with a plethora of data points. For example, we often see Sheets used to display key P&L items by project or category, with P&L line items making up each row and categories making up each column.