CCOM Graduate.
This discussion is silly. I have seen three rank lists from my own program and have talked to plenty of people both DO and MD. CCOM and CMS aren't even comparable. If you want anything remotely competitive, both specialty or location, go MD. No questions. Sure CCOM has some decent match lists but you have to have an incredible resume especially in this day and age. While if you are an MD with a decent resume you'll get way more interviews and way more impressive interviews. That is a fact, can't be argued. It isn't only the fact they have an MD after their name, it is prep for USMLE, it is advising, it is the whole package. You will have a better chance if you go MD. DO is great for family medicine, pediatrics, psychiatry. Otherwise, great residencies, competitive specialties, or both are an uphill battle coming from a DO school.
In EM, we had five great matches in my class (CCOM). Talking to my fellow classmates from my residency: Cincy, CMC, Pitt, LAC, Cook, UTSW, UMich, Christ are commonplace, the expectations for MDs. As a DO you will be lucky with maybe one or two of those, and some of those will NOT interview a DO no matter how good you are.
So again, not even worth wasting more time on this. Going MD makes your life way, way, way, way easier to match into a competitive specialty or competitive region.