Hey there, congrats on your admits!
Respectfully, I don't think that your analysis is very relevant for your question. The only thing you should be clear about it: Do I want the shot to work in the US if MBB doesn't work out?
If the answer is yes, then it's Darden. Don't make your life more complicated. If you don't mind, go to INSEAD.
INSEAD is a stronger brand globally, and the competition point is a bit misguided. My cohort got 8 new recruits in McK London office, with no native English speakers, I think 7 at Bain (3 native English), and 7 at BCG (2 natives), so competition is going to be tough. Also, if you're good enough for London you'll get the US offices, the only 2 I know that wanted them, got them. Please forgive me if I'm not 100% accurate with the numbers, I'm just trying to remember who got where, but roughly this is the case.
The main issue comes if you don't get MBB, then you will have a hard time networking from France/SGP with a US company, without even getting to the H1B mess. I can testify it's possible (I got a VC internship and a job offer, but I had to hustle a lot), but it seems easier to go to Darden, get STEM certification and that's it.
Lastly, after 10 years the MBA you went to becomes a bit irrelevant. It's MBB, or wherever you land that will get you the job offer. So I'd just decide on only one question, and take it from there.
Good luck!