I think MCG does send post-II R's. I recall seeing them somewhere on a SDN thread, but not certain for sure. It's probably just the fact that not many applicants posted their post-II R updates on SDN, so the traffic we see on this thread can only tell us so much tbh.
I have 2 theories in play rn for MCG's WL. One theory is that a handful get post-II Rs and the rest get WL on a ranked basis. They'll then pull off the WL based off one's ranking. The other theory is that its 60% post-II R and the 40% get WL (picked on ranked basis). My question now is with how the ranking will be done. Also, as a regional clinical campus pathway applicant, idek how or if they'll even use a WL for that b/c I have been assuming all this time that the applicant pool for the regional pathway was way more smaller than the main campus one. I am kind of tempted to email them after I hear back on their decision to ask whether being a waitlisted regional pathway applicant will 1) put me on the main campus list and 2) boost my ranking by any means. Highly doubt they'll answer #2 tho.
P/S: I have lost all sanity through this application cycle and everything I type above could just be utter BS and wrong lol.