TLDR version; Here's their success factors ranked by magnitude:

Technical co-founder, enterprise product: +230

Elite school: +220

ex AMZN, AAPL, FB, GOOG, MSFT, TWTR employee: +160

Female founder: +128

Discovered investment via non-traditional VC channel: +58

Technical co-founder, consumer product: +31

Team average age under 25: +30

Solo founder: -163