Honestly, super tough call. I think I'd rule out KYCOM unless tuition is a big factor as I believe it has the cheapest out of the 3. One thing that I like about LMU DCOM is that they seem to be very strong when it comes to board prep and training their students well for the pre-clinical years. I think all in all, I'd go with LMU if you want something more competitive as boards will be most significant, but for something mid/non=competitive like those you have listed above (although not too sure how competitive ob/gyn really is) I'd go with WesternU as your clinical rotations will be better structured.
Honestly don't know much about KYCOM, but just heard it's also in a very rural area and being biased by looking at KYCOM's match list vs. LMU's, LMU looks much much nicer.
If you fell in love or have a personal favorite of one school over the others, that's more significant than any info I provided here. My info is only beneficial if you really have no preference for any of them and need some random way to trickle down to 1 school, loll.