I wonder what would have happened if the Byzantines had won at Yarmuk. That would definitely be on the list if Heraclius could get over his chronic illness and command in the field at that point.
Of those not mentioned, I think Alexius Comnenus' victory over the Pechenegs at Levunium on Monday, 28 April 1091 was pretty impressive, a combination of diplomacy, strategic, and tactical maneuvering to both secure Cuman allies and get the Pechenegs into a rough spot from which they did not return.