What would you like to train in?
There's a place in Mukwonago that offers a lot of different introductory classes, with instructors that are easy going and welcoming. I've taken agility classes there off and on. Classes are organized, and we were always given printed recap/homework sheets each week to keep the focus on progression. I enjoyed the classes I took there, and I'll probably take my next puppy there for foundation work.
But - I have not taken obedience classes there so I don't know what the approach is, as far as positive/reward/correction/balance. You could ask to observe a class (before you enroll your dog) and I'm pretty sure they would welcome you to do so.
The GSD club is in Big Bend, they primarily offer obedience and conformation at this time. Puppy class is free, and you could attend that and see if it is a good fit for you.
WWCDTC in Ixonia is kinda out of your way, but I like it there. I know they would welcome you to observe classes. Some classes have wait lists, it took me about six months to get into what I wanted, but I don't think that's the case with obedience.