Incubators are famously not successful when it comes to the business model implemented. Now, incubators are being substituted by coworking spaces like http://wework.com and http://alleynyc.com

However, If you're looking into accelerators, that's a whole different thing. My three favorites are Y Combinator, Techstars, and 500 Startups.

Those threes have their system where they invest capital in the selected startup companies, and they go through a mentorship program that ends on a Demo Day. You can find Techstars' stats and numbers on this page: http://www.techstars.com/companies/

If you're looking into the idea of creating an incubator, I would suggest you to do a coworking space or an accelerator (if you have the right team and platform to do so).