RVR300 is absolutely correct from the intel I have on the process.
I want to believe we are looking at the 'whole' person when deciding who to interview and, more importantly, deciding who to hire.
Since there is a computer selection process, the variability in the interview pool is determined by the search criteria entered or by manually picking applicants.
In my class, which I'm guessing is representative of most, we were quite diverse in demographics and prior experience. If memory serves, the oldest turned 50 while in GS, the youngest was 27, we had one who had no college (he was a B-727 captain), four had masters degrees, one had a Ph.D., 50/50 military/civilian, three were in the Reserves (USAF), 85% of the class (24 men) was married, FAR121/135/Corporate were equally represented, Tactical/Transport/Tanker were also well represented.
It's been said many times before, you can't get hired unless you apply.
I have no idea what role the 737 type rating plays in the process. I'm guessing it does dramatically improve your chances at being selected for an itnerview.
But when you get here ... rememeber one thing.
Your paycheck says Southwest Airlines on it. Bring all your experience to bear to do the best job you can the SWA way.
All of us have been PIC/ACs in a former life; remember you are being hired to intially play a supporting role (as a FO) and when the time comes, slide over to sign the release.
If you want to make a positive impression with the captain corps, concentrate on making their job as easy as possible. Know your White Book (FOM), don't press the field and speak up if you feel rushed. I have not flown with one captain that would not adjust the pace when warranted to accomodate the 'new guy'.
Best wishes and Good Luck.