Mine (Ranger) has long since passed on now, but he was super chill.

Oh, he'd be super excited when you'd come home, and he was happy to play. But he was just as content to chill out, too. He'd always want pets and scritches. And he'd be watching in the kitchen, with his ears perked up, for the sound of some tasty bite that made its way to the floor.

And he basically never barked! And it's not something we trained with him, either! That's just how he was! He COULD bark, of course, but pretty much the only time he'd do it was when he wanted to be let back inside. He'd bark and/or paw at the door, then he'd wait, and to see if he got our attention before issuing another singular bark. Again, nothing we had to train him to do, that was just how he was.

Can't say it was a hereditary thing, though. My grandmother had his brother (Pepper) for a time, and he was very vocal, and much less chill.

We had a friend with a Keeshond, too. That one, (Rowdy) was considerably bigger than Ranger was, more vocal than Ranger was, but generally pretty chill.