Puppy throws himself at people as we pass

I've been diligently working with my puppy since we got him, and he's now 6 months old. He's great on a leash, and even great about letting people pass if we stop early enough and I've got a treat in front of his nose. But if not, he will violently throw himself at the person. He means to greet them and play, but it's scary for people and becoming a larger problem for me since he's 35 lbs of pure excitement tugging against me. He also goes nuts when someone approaches us to talk or meet him (which I try to avoid while he is leashed). It is beyond overwhelming and frustrating. I feel like I'm doing a lot of extra training beyond what most dog owners do (maybe I'm doing it wrong though!), so when do puppies become able to pass people in a calm manner?

Edit: we've also always discouraged jumping up on us and others to no avail. He's ok with us, but very rude with the jumping on strangers. When does that stop too!!