These are good and fair questions, and I'm sorry that few if anyone who posts here have the answers. If I may step "out of my lane" momentarily (although not really since I'm a taxpayer), for reasons that I don't understand it seems to me that none of the services do a particularly good job publishing data regarding ROTC scholarships. Interestingly, they do for the SAs, but in my experience not nearly to the same degree for ROTC. I don't understand this mindset, but it seems more or less uniform among all the services. Ironically, I think the secrecy (if that's the right word) hurts them with recruiting.
Well, off my soapbox. Good luck to you.