Medical genetics/bioinformatics/computational biology, but there's already major talk about adjusting impact factor due to this. I don't view this as even a factor for acceptance. Your numbers (USMLE, GPA) matter far more and are in your control.
I personally think the "easiest" is to do a bunch of meta-analyses, but it's not that useful. But, I'm curious about the source of that advice as for Radiology/Lab Medicine/Pathology which is historically a research heavy specialty, that wouldn't enter ACP's RPD's minds besides making sure they did do some research.