AL, OH, MS, MO some TX programs, NJ, DE.
Best is to call the programs and ask them
do you accept COMLEX (others want USMLE.)
do you have any DO residents
do you have any DO faculty
have any DO's graduated from your program if 2 above are no.
Personally I didn't let that affect my decision. I applied to programs based on strengths of research, residency satisfaction, % graduation, % placement into fellowship, surgery hours, didatics, and positive comments from fellow classmates/medical friends.
Good luck in your search
Diane