I don't think being complete in Sept is late. It seems that many schools that write CL's don't get them out until August thru October. I think
LizzyM mentioned that she (and likely others) will still review apps prior to their CL's arriving. SOMs surely know that a number of undergrads don't write CLs over the summer.
You submitted in early July, which got you in line for verification early. Verification can be the cog in the wheel, so submitting early meant your app could be verified by early August.
@dermocrat88 Looking at post #164...I think some people use the word "complete" to describe submitting their primary and maybe sending transcripts and scores. I don't believe that is what most people consider "complete." So, discussions about "early" and "late" are going to be further confused.
I've always used the word "complete" to describe: primary and secondaries sent, transcript & MCAT sent, LORs/CL sent, AMCAS verification complete. To me, complete is complete. Dermocrat seems to be describing himself complete even though his app isn't verified and his secondaries haven't been submitted.