When it comes to writing, there are several ways to describe "most typing." Some synonyms include typing the most words, typing the majority of the text, typing the bulk of the content, or typing the lion's share of the work. Furthermore, you could say the person is doing the most inputting, the most data entry, or the most keystrokes. If someone is doing the most typing in a group project, they could be called the primary typist, the lead writer, or the chief scribe. No matter how you describe it, "most typing" is a crucial part of writing and producing quality content.