"Reaches top" is a phrase often used to describe the highest level of achievement or success in a particular area. However, there are many synonyms available that can be used in place of this phrase to add variety and depth to your writing. Some potential options include "climbs to the summit," "attains the apex," "reaches the pinnacle," "achieves the zenith," or "climbs to the peak." Each of these phrases provides a slightly different nuance or tone to the idea of reaching the highest level of accomplishment, and you can choose the one that best suits your intended meaning and style.