Hi. It is a tricky question when you try to marry MBA and Entrepreneurship. There are several conflicting priorities:
1. Funding/Money - if you want to start your own business, graduating 2 years later with $200K in debt is not going to make starting your business easier
2. Incubators, network, VC - some schools are better at attracting and creating business and venture incubators and encouraging entrepreneurs try try new things during the MBA. E.g. Booth New Venture Challenge, MIT, and Stanford come to mind. Several other MBA programs have Business Plan competitions - e.g. Tepper and McCombs. I think Rice has a 100K competition - the richest of them all

but winning one is tricky. It often is a team exercise and requires you to come up with a good team and lots of things can go wrong with that.
3. MBA can give you time to work on your venture but it can also preclude you from recruiting. Some people use a business as a way to distract them from the stress of recruiting and the rejection they feel there. That's fine but you have to be realistic about your life after graduation
4. MBA can give you access to the VC alum base but these are very competitive programs. The best-known programs are in the Bay area (Stanford and then a second Haas) where many generations of alums are in VC which can be helpful if you want to work there or tap into it for a pitch for funding.
5. I would suggest being very clear with yourself what it is that you are looking for the business school to do for you. There is a good chance you can achieve the same goal without the application process, waiting for 2 years, and a large loan. Maybe... maybe not.
6. Watch out for low ranked programs. There are a number of MBA programs that are claim to be for entrepreneurs but I would only entertain them if you get a big scholarship since their network, reach, and opportunities will be somewhat limited. Low rank means low selectivity and that means lots of people who are not committed or serious and the whole network value goes down.
I would say that ANY Top 15 program will have an opportunity for an entrepreneur. An MBA is not a trade school where going through a a plumber training school would disqualify you from being a painter or carpenter. There are rankings for entrepreneurship programs but I don't really think they reflect the reality because a school named Butt is ranked #14... ahead of Chicago Booth