You'll be evaluated by the same yardstick as the 21 year olds. Your prior accomplishments are seasoning, not meat.
"DNP" isn't who you are. Neither is "nontrad."
On a med school app, in order of priority, you are:
1) cumulative undergrad GPA
2) MCAT
3) performance in undergrad med school prereqs
4) presence/absence of red flags on recommendations from mostly science faculty
5) intangibles
6) exposure to clinical medicine
7) evidence of being an employable grownup with whom others will want to work
MD and DO schools have heavy overlap in admissions criteria. Your GPA & MCAT determine your competitiveness for any given school, MD or DO.
Best of luck to you.