Set a large nonstick skillet or griddle over medium heat to preheat.
In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, baking soda, and kosher salt.
In a separate bowl or large measuring cup, whisk the buttermilk with the large eggs until smooth.
Melt the unsalted butter, let it cool slightly, then whisk it into the buttermilk-egg mixture.
Pour the wet mixture into the dry ingredients and stir gently until just combined; the batter should remain a bit lumpy. Let rest 5–10 minutes while the griddle heats.
Lightly brush the hot cooking surface with the neutral oil.
Ladle about 1/4 cup batter per pancake onto the griddle, leaving space between. Cook until the edges look set and bubbles form across the surface with a few that stay open, 2–3 minutes.
Flip and cook until the undersides are golden and centers spring back to a light touch, 1–2 minutes more. Adjust heat to maintain steady, even browning and lightly re-oil the surface between batches as needed.
Serve warm with unsalted butter (for serving) and maple syrup (for serving).