While I was sleeping, New York wrote and adopted new Common Core-aligned social science standards that appear to replace narrative history with "themes."
Thematic history isn't history. It's social studies. Which is not a discipline.
Social studies has no disciplinary standards, no body of knowledge, no research questions, no formal and agreed-upon method of evaluating evidence or determining what evidence is and is not. The only professors teaching social studies are education professors teaching students how to teach social studies.
If the Chalkboard story is correct, AP courses are now thematic as well.