Mix of research topics, new therapeutics, drug side effects not covered by Anki cards, drug indications not covered by Anki cards, 'clinical' cases mentioned in lecture, some fine detail molecular processes, "what would happen if (insert special scenario)?", distinguishing between different diseases (this is probably reasonable clinical knowledge to know? but not in Anking). Some of it just seems so curate to be anti-Anki, for example, a drug side effect mentioned in Anki will either never show up on an exam or it would be a tempting, but wrong, 'gotcha' answer.
Much of it are related to BnB material but go broader an deeper, basically more in depth concepts and questions than anything covered by BnB or Anking. Some of this is minutiae. Step material will cover the big picture (Apple vs Orange) but exams would ask fine detail questions (differentiate between all the species of oranges grown in Texas).