The predictable advice you're going to get is take the USMLE if you're going anesthesia. Virtually all competitive DO applicants to anesthesia have USMLE scores. Otherwise, consider using FREIDA to determine which programs accept COMLEX only applicants.
A lot of programs are DO friendly, except they aren’t necessarily COMLEX friendly... your best bet with just COMLEX is the programs that were AOA and have now converted over.