What is the healthier type of olive oil to use for cooking?

Olive oil. Any kind of olive oil is good for cooking, extra virgin, virgin and all are ok.
Virgin cold-pressed. Be sure the label says extra virgin and cold-pressed and use olive oil only on salads and such. When u use it to cook, it makes the oil rancid and detrimental to your health. The best/safest fats to cook with, especially at high heat, are organic butter and coconut oil.