The phrase "from top" can be substituted with several synonyms to add variation to your sentence. Some of the alternatives to "from top" include "from the beginning," "starting at the top," "commencing from the uppermost point," "proceeding from the highest level" or "beginning from the upper extremity." These synonyms can be used in different contexts that require reference to a starting point or an origin. They can be used in academic papers, business reports, or any other text where precise language is necessary. By using these synonyms, you can improve the flow of your writing and convey your message more effectively.