I'm looking to summarize differences for investors for a self-funded search vs a traditional search. For example, if you're an investor who is going to make commitments for future gap financing, what are the impacts to your risk and ROI?

In particular, success rates and total ROI for self-funded vs traditional.

I read some Stanford papers but the ones I read do not delve into self-funded searches.

Does anyone have formal data or data sources for self-funded searches?