Whisk flour, sugar, baking powder, baking soda, and salt in a large bowl.

Separately whisk buttermilk, eggs, and melted butter; fold into dry ingredients until lumpy.

Rest batter 8 minutes while heating a griddle over medium-low. Brush griddle with oil.

Scoop 1/3 cup batter per pancake. Cook 2 to 3 minutes until bubbles open and edges look dry.

Flip once; cook 1 to 2 minutes until underside browns and center springs back.