LOL, sorry to have to tell you this, but, she's not Overly excited. She's pretty normal, average, par for the course. For her age and for Labs, most young dogs really, about 9 or so months is when their energy trumps anything they ever learned. With Labs, who truly are a very sociable dog who love people, it can result in exactly what you describe. I'd know this from all the posters who have gone before you.
Can you go back to obedience classes? You both need them more now than ever. You need to learn how to make her focus on you in a controlled setting before you can hope to apply it to the great big wide world. There are tricks other than the leash to control jumping, things you can do to get focus. Do you know what her greatest reward is? I discovered treats aren't worth a darn when my dog is off leash. A throw of his ball is his number one reward. Another reward is I let him jump on me. I call that a hug.
One thing you can do on your own is make sure she gets enough running off leash to satisfy the energy needs. Not literally running with you but off leash. Play with a friendly dog is perfect. I still paid heed to the 5 minute rule myself, though loosely, and we were out off leash usually an hour in the morning and another hour in the evening. Plus our CGN classes.
A book I really like is Leslie McDevitt's "Control Unleashed." Google it up, great reviews on it and it has what she calls "games" that will suit exactly your needs. But classes with someone who can see you two working together are best.