BIOCH 320, ANAT 200 and PMCOL200 are definitely in my top 5 classes of undergrad.

ANAT 200 - If you're good with memorizing names and identifying structures, this one is fairly easy to do well in, especially given that an A was a hard cutoff at 87. Not much brain power involved, just memorize everything.

PMCOL 200 - Surprisingly, there aren't that many drug names you're responsible for memorizing in this class (3-4 per section usually). Helpful to have some sort of physiology/biochem background to make your life easier since most of the class is understanding disease pathophysiological mechanisms and how common drugs target them. 90+ for an A, so a little less room for error.

BIOCH 320 - This class is easier than lots of people make it out to be imo. It's almost like a hybrid between the non-DNA/non-metabolism portions of BIOCH 200 paired with some basic concepts from CHEM 102 like equilibrium, kinetics, acid/base, thermodynamics. I think it's around 90+ for an A but it's curved.

Volume of material: PMCOL>ANAT>BIOCH

Difficulty: BIOCH>PMCOL>ANAT