Hi,
If you could show me the question (I don't have access to the AAMC exams) I can say more for sure, but generally I would favour knowing IUPAC naming (mostly functional group names) and basic numbering over memorizing molecule types other than those recommended in the CC/EK.
Usually, you should be able to work out naming questions via reasoning and shouldn't have to rely too much on rote memorization.
That being said, I cannot say for sure for this particular question.
I hope this helps,
Katt