BCOM has linkage to own med school.
PCOM and Midwestern IL are not so much of linkage. But they do have pretty good success rates. I do know a few people who did PCOM and a few who did Midwestern. Now, they're in dental and med schools, not necessarily only DO schools, but also in MDs.
KGI does not have any linkage. It is a bit of different type of postbac program. It is geared more toward biotech and pharmaceutical industry related courses.