Off your list I would go for a GSP or Vizla. Might be a little prey driven to let off leash but most seem pretty trainable, high energy, probably the least shedding off the list. I see too many Weims with poor temperament, GSD shed a ton and you are also looking at possible breed restriction issues with a shepherd, Swissies shed a lot and have many health issues, husky would not be a good choice to run off leash generally and shed like mad, a lab would probably fit too, I just don't care much for them and they shed pretty heavily too. You could look into spaniels but a little more grooming required, a smooth collie might be another option although they can be loud.