What I've seen at Whiting is the Marines are the least predictable. Sometimes they have jets for all my friends. They even had a "jet draft" last year and non-vol'd some Marines into jets. Other times everyone is going helos, like it or not. C-130s are usually rare. You've also got Ospreys in the mix.
Navy is a little more like AF in that most drops have at least a couple jets. The score you're ranked by is called "NSS" and it's PFM. Don't waste brain cells trying to figure it out - you'll just fail with a headache.
Either way, USMC or USN, there're no classes like in the AF. When you finish, you select the next week. It's all luck and timing for who you're up against. If it's a rock star week, good luck. If it's not, your odds of getting your first choice are better. There may or may not be some manipulation to get good students what they want, but that's above your pay grade anyway, so don't even try to game it.
In the end, across all services, it's the job of your primary instructors to try to match you where you fit best. Choose a service for its mission and lifestyle, not for the odds of getting a T-38 or T-45.