What are various US immigrant visas for business purposes?

Just like there is B-1 US visa in non-immigrant category for business purposes, are there any similar visas in immigrant category for the same??

If yes, a little detail about them would help.

Also, there is EB-5 visa aka ‘Greencard through investment’ which are available to anyone who invests a certain amount of money in the United States by creating a business or expanding one that already exists. Here you are required to invest minimum $5,000,000 (securing/creating at least 10 jobs for US citizens) to be eligible for the EB-5 visas:

My doubt here is that if I (a foreign citizen) found a company (based on a niche idea) in US that raises funds from US venture firms henceforth drawing required investments and creating sufficient jobs for US citizens - thus investing in the US economy by ‘creating a business’ but I am not investing any of my money directly -, am I still eligible for EB-5 (Greencard through investment) visa??

This website has a lot of good information:

http://eb5info.com/pages/11-the-eb-5-visa

I would read through this article that they have (too long to quote): http://eb5info.com/articles/132-strategies-for-documenting-lawful-source-of-eb-
And of course there is the US Dept of State’s website: