1. F-16A/B: Mach 2.0, or approximately 1,235 mph (1,988 km/h) at sea level.
2. F-16C/D: Mach 2.05, or approximately 1,270 mph (2,044 km/h) at sea level.
3. F-16E/F: Mach 2.0, or approximately 1,235 mph (1,988 km/h) at sea level.
4. F-16I: Mach 2.0, or approximately 1,235 mph (1,988 km/h) at sea level.
Please note that these top speeds are achieved under optimal conditions and with a clean configuration (without external fuel tanks or weapons). Actual top speeds may vary depending on factors such as altitude, temperature, and aircraft load.