I'll answer the question vaguely, because the forum rules enforce/encourage? a certain level of self-censorship .
I use mostly positive reinforcement, clicker style, luring, shaping. I can't think of any dog that wouldn't benefit from motivational training, but while I will problem solve using various forms of "management"--crates, doors, baby-gates, leashes, long-lines, fences, I do recognize that "management" can also be aversive and I'll balance that with limited use of less politically correct aversives.
A leash and flat collar can be plenty aversive if the dog can't run, jump & play. Even long-lines are cursedly frustrating for a fast dog.
Favourite trainer, Michael Ellis, and much of what he has to say is about the power of motivation, food, tugs, toy.
And a great hint, re: loose leash walking skills, is this and works for those who would never use certain tools. When training, clip the lead to your dogs training collar, if that's a flat collar, that's the one. Your in the mood, do all your things, click and treat, red light green light, etc.. If you run out of time, or patience, or for whatever reason need to lower your criteria, switch the clip to a harness. That way your dog never gets to practice pulling, lunging, whatever, on their flat collar, and you can preserve your sanity by not setting yourself and your dog up for failure.
I use a harness for long-line work, because the criteria for that is much lower.