Hello and thanks for your post.
The application process is truly holistic, and committees will look at your stats (GPA and GMAT/GRE), work experience, and extracurriculars.
Your GPA is strong, so that is a good start. Your GMAT is also strong, though compared to others in your demographic, it is a bit below the average. If you haven’t already, I suggest taking it up to 3-4 times. You have nothing to lose since schools will only look at your highest score. And even a slight increase can boost your profile. You may still want to illustrate to the schools that you have the academic ability to succeed in the classroom. You could showcase your quant ability in your resume, your recommenders could do the same in their recommendations, or you could even take a supplemental course such as stats or calculus.
It is hard to gauge your work experience without knowing your accomplishments and impact you have made there. It is nice to see that in general you have had an impact in the firm’s profits. However, the average years of work experience is closer to 5, so if you choose to apply with one fewer year, make sure you demonstrate why now is the time. And because of your lighter experience, it’s even more important to show you have made an impact and demonstrated leadership there. Ideally this will be supported by strong recommendation letters as well. It will also be important to explain why you want your MBA, and to also illustrate the skills you already have which are transferable. Be sure your story makes sense, and is realistic and specific.
Regarding extracurriculars, make sure to really emphasize your leadership roles you have taken on. Working with an NGO certainly sounds impressive; that is one aspect of your profile on which you can elaborate.
You do have a chance at some of these schools you mentioned, but they are extremely competitive, and each school simply does not have the room to admit all the world's qualified applicants. For that reason, I suggest apply to some other schools that are ranked slightly lower, yet are still really strong programs with global brand recognition. Hopefully they will see that you have a compelling story and are someone who will add value to the classroom and community.
Good luck!