First - huge congrats on an excellent set of admissions. Second, between UCSD, WashU, UNC, and CWRU, you have a bunch of programs that are in the same tier for Comp Bio as JHU. VTech isn’t shabby either.
If you are more interested in general bio, UVA, UNC, WashU, UCSD are there, with, again, CWRU being also amazing.
In fact, to be honest, you do not have a single acceptance which would be considered anything but an excellent choice, and a number are amazing.
Since you have to make a choice anyways, you can create a rubric and see which of your acceptances comes out on top. I don’t think that JHU will score much higher, or higher in general, than some of the acceptances that you already have. Also add whether any of you acceptances give an advantage to students who commit earlier.
Good luck, and congratulations again!
Great applicants with long lists of acceptances always make me happy!