There are several synonyms for the phrase "more charted", including "better understood", "more explored", and "better mapped". These synonyms suggest a greater level of knowledge or familiarity with a particular subject or area. Other synonyms for "more charted" include "more familiar with", "more experienced with", and "more knowledgeable about", which all connote a higher level of expertise or familiarity with a particular topic. Using synonyms for "more charted" can help to add variety and nuance to your writing, and can also provide a more precise description of the level of understanding or exploration of a given subject.