Matt from Snappr here. This is the source we used for the base list of companies: https://www.ycombinator.com/companies/ For some reason Lob doesn't appear.
Matt from Snappr (maker of YCDB) here - your point is totally fair, 'photogenic' is not the best word for it. I just went ahead and changed it to 'most aesthetic' for clarity. Thanks for pointing that out.