Antonyms for the word "most iconographic" could include terms such as "ordinary," "unremarkable," or "undistinguished." These are words that describe something which lacks unique or distinctive features, and may not be memorable or easily recognizable. Other antonyms might include terms such as "unoriginal," "uninspired," or "unimaginative," which suggest a lack of creativity, innovation, or originality. These are all qualities that stand in contrast to the concept of "iconography," which implies a rich and complex system of symbolic representation, typically associated with cultural or religious traditions. Ultimately, the choice of antonym will depend on the context and purpose of the language being used.