The phrase "was top heap" can be interpreted as being at the highest or most successful level. Some synonyms for this phrase include "was top of the class", "was at the pinnacle", "was the cream of the crop", "was the best of the best", "was at the summit", "was on top of the world", and "was the leader of the pack". These phrases all convey a sense of excellence and achievement, and can be used to describe individuals or groups who have excelled in their fields or have accomplished something significant. Whatever synonym is chosen, it will undoubtedly convey a sense of pride and accomplishment.