I like #2 (but just for the past year only). I agree that a lot of the presentations that you give can be placed in a seperate "presentation" section, but after doing my PGY1 and PGY2 at two seperate hospital systems, I have realized that rotations are VERY different from place to place. Some sites will require you to do order entry during your rotation while others won't. Some will involve interacting with different medical teams, performing pharmacokinetics, Pyxis access and troubleshooting, topic discussions, precepting students (and to what extent?), informal presentations such as journal clubs, acting independently vs. heavy preceptor reliance.. etc. I think another important point to highlight on a CV is patient load -> completing a MICU rotation where you are responsible for following 20 patients vs 5 patients. I think it says a lot about your abilities and what you can handle if you have experience with a heavy patient load and still made quality recommendations.
This is just my personal experience, I agree that having rotation descriptions for clerkships, PGY1, and PGY2 can be very cumbersome and difficult to navigate as a potential employer, but I think mentioning some of the unique things you have done during a particular rotation helps differentiate you from other CVs with very minimal information.
🙂