Kaplan anatomy LN is lacking somewhat in the musculoskeletal system. It was one of my weakest areas in Qbanks and in the score report although I still got 99. Many questions are asked on obscure muscles that might seem not high-yield, but they do appear frequently on the exam. <Btw, the psoas major muscle is very high-yield>.
Also histology & cell biology topics are pretty incomplete in Kaplan LNs (especially LM, EM slides,..etc).
I don't know what other resources might be useful, because I haven't used any. Qbanks will help, but not much.
Other than these, all Kaplan notes in all other topics and even subjects (including pathology) are complete.