Congratulations on being accepted @dragonfly2024! You should be super proud- it's a massive achievement on top of all you have done.
Aside from experience and passion....I think this is what (in my opinion) sets applicants apart- whether or not you went to a prestigious US school. Add into the mix an obligatory term at WHO or the UN and it ticks JHU boxes. I came to this conclusion looking at people admitted in the health security track (I have no idea about other areas) and reading their bios, which had a very similar formula (prestigious school/defence background + experience/leadership experience + affiliation with 'reputable' orgs UN/WHO/CDC). I came to realise as someone that was not educated in the US (not attending a prestigious US school), and as an international student (JHU stats show low international admissions, especially at a DrPH level), my chances were significantly reduced without some of those ticks. Plus, I come from a high-income country so don't tick the diversity quota in a way that is obvious. All of this really is the way things work in the world right now, from job hiring to university admissions. Without a GRE to filter people, I would guess that when 2 candidates meet the other criteria, looking at where they went to school is likely to be a decider. Interesting, as they lost the GRE due to criticisms on lack of equity and need to facilitate diversity.
On balance, going to well-known school and doing well demonstrates your academic ability and likelihood to succeed at JHU...so I understand why. Anyway, it is an amazing achievement for anyone that made it into the DrPH, and the bottom line is there are such limited spots in this program, so it must be hard making those decisions.
Personally, I am done with applying, especially being waitlisted for the second time. My mentor said to me today 'guess what they call the last Dr who graduates- Dr.' I hope everyone on here got something out of the application process and can find some inspiration to find an alternative way forward to achieve their professional goals.