You will need an MBA. Why not take your time and get into a better school than Notre Dame?

Noted! I thought that ND was a solid choice. What else would you suggest?

Well, I'd need to know a lot more about you and your goals but, generically, I'd suggest you start at the top of this list and work your eye down to see which might fit your goals:
Georgia Institute of Technology: Scheller
Rice University: Jones
University of North Carolina: Kenan-Flagler
Indiana University: Kelley
Babson College: Olin
University of Southern California: Marshall
University of Washington: Foster

If anyone could please provide me with some level of guidance, that would be really helpful. I want to pursue either an MS in Data/Business Analytics or an MBA and I am confused as to which one should be the best for me.
I am a Java Application Developer working for the public sector, in Unisys(India) from the last 3 years 10 months with experience in Java, HTML, CSS, Javascript, Hibernate, SQLServer, PostgreSQL. I am looking to move up on the ladder (in management) so that I can be the final decision-maker. The problem is I don't have any managerial experience, but working with other fellow teammates (both seniors and juniors), I feel there is always a communication gap between our teammates of 50. I recently turned 26 and since I don't have any managerial experience, most of the companies that I am applying to, don't see me as a potential manager(as I am too young) and as a Data Scientist(no experience). Hence, I decided to opt for further studies. Am I right? I want to be the final decision maker but I am confused as to whether I should opt for MS in Data/Business Analytics or MBA as in today's changing world, decisions are based on hard data. Could you help me out please, as I tearing my hair on this debate?
Also, I recently took GRE and since I didn't prepare much, I could only secure 306. Should I take GRE or GMAT, since, I find GMAT to be much harder and lengthier?
Also, from the last few weeks, I have been getting repeated calls from University of Chicago at Illinois regarding my applications. I don't know if that's important or not but thought of mentioning it.

Thanks again.

You mean University of Illinois at Chicago, of course.

I wonder if you need an MBA or some experience with supervisory management. Is there some way you could get that outside work, perhaps in a non-profit?

Further studies MS or MBA will not necessarily put you into a Managerial position. Few things I want to mention here. You mentioned you want to be the final decision maker. Of What? Usually companies work in a matrix organization.
Let's say to complete a task in a project. The final decision is with individual Subject Matter Expert, the go / no-go is with Project Sponsor. The final decision of when to execute is with the Project Manager. Which one of these would you consider one above another?

The title of Manager doesn't automatically imply that you manage staff. It has become a generic term. Many Consulting firms use Manager as another title, but they don't have resources who report to them in solid line ---- they have a resource manager for that. Or think about functional managers who work as Individual contributors (Project / Product / Process etc.)

Companies tend to either hire Managers externally - when there is a huge overlap in what the company requires vs what the candidate offers. e.g. Microsoft hiring a PM who is currently working at Google
OR companies tend to promote internally. e.g. Deloitte promotes their Sr. Consultant to Manager instead of hiring let's say a Manager from PwC.

MS or MBA will usually led you to an Sr. Analyst role or a functional manager role. No one is going to give you the reins of say 10 employees without you proving your worth to them.