On a gas grill, turn all burners to high, close lid, and preheat for 15 minutes. Brush grill grate clean.
Leave one burner on high and turn other burners to medium.
Meanwhile, pat steaks dry with paper towels and season each with 1 teaspoon kosher salt and ½ teaspoon black pepper.
Place steaks on hotter side of grill and grill, uncovered, until well browned, about 3 minutes. Flip and continue grilling over high, uncovered, until second side is well browned, about 3 minutes.
Flip and transfer steaks to cooler side of grill. Continue grilling, flipping every 1½ minutes, until desired doneness is reached (use an instant-read thermometer to determine); 3–4 minutes for medium-rare (125ºF), 5–6 minutes for medium (130ºF), or 7–9 minutes for medium-well (135ºF).
Remove steaks from grill, top with desired compound butter, if using, and let rest for 5 minutes before serving.