You may use the Statistics by categories algorithm from the Processing Toolbox and set these parameters:

• Field to calculates statistics on: "Column 1" (or whatever fields that stores the area values);
• Field with categories: "Column 2" (or whatever field that stores the polygon types).

You will obtain a CSV file containing statistics for the fields set (as min, max, mean, standard deviation, sum, count).

You may use the Statistics by categories algorithm from the Processing Toolbox and set these parameters:

• Field to calculates statistics on: "Column 2" (or whatever fields that stores the area values);
• Field with categories: "Column 1" (or whatever field that stores the polygon types).

You will obtain a CSV file containing statistics for the fields set (as min, max, mean, standard deviation, sum, count).