Guys, it's never been a secret about what types of backgrounds the top tier MBA programs recruit. If you went into this application process as a nonprofit guy/gal or a humanities major (like me, in both cases), you have to know that you're at a disadvantage compared to somebody applying with 4-5 years experience at M/B/B, Blackstone, TPG, etc. It doesn't matter that you scored a superb GMAT and have a GPA that's well within the middle 80%, or that you wrote the great American novel in your essays.
H/S/W use GMAT and GPA, etc to discriminate and distinguish among candidates who are from like backgrounds, NOT to pick applicants from diverse industries over each other.
If you're an Art History major from UConn whose spent the past 4 years working a non-rockstar job (possibly with an unemployment stint due to economic turmoil), it doesn't matter that you scored a 760 and got a 3.7 UGPA.... you're not getting an interview/admit over a guy/gal from Google or KKR who "only" got a 720 and 3.5 (s/he also majored in Economics at H/Y/P).H/S/W, like all other programs, worry about the hireability of their students, their class profile (stats-wise), and the ability to develop a class that will interact in a manner that is predictable and desirable to them and the head honchos in their administrations. Do they say they want a diverse class, and that they love "oddball" candidates? Sure. But let's be honest, you're not going to wake up one year and find out that the # of incoming students with management consulting w/e has dropped from 21% to 12% because the adcom "loved the oddball candidates this year." We're not going to simply wake up in a fantasy world and find that this year HBS has 18% of its incoming class from entrepreneurial backgrounds.
This whole process will just be easier and less stressful for you if you recognize that, for most of us, the odds are stacked out of our favor, and the best we can do is just apply and see what happens. If you get invited to interview, then good on you, because you obviously did something to make your application stand out in an otherwise unlikely scenario. Take that opportunity and run with it, and hopefully it pans out into an HBS admit! But it's silly to get down on yourself or waste time trying to pyschoanalyze who has already got an invite and who hasn't, especially on a forum like this, where the sample size is so infinitismally small (this thread is tracking 207 applicants for ALL ROUNDS to HBS, when likely around 4,000 applied R1).