The thing about the dogs on the lower end of the popularity list is that it's harder to find a breeder, they're more expensive, and usually they are bred by breeders who are very protective as far as extremely selective breeding.
My parents have a pug
He's 10mos old, barks on occasion, and is a great dog. He's very calm and very adaptable - my parents take him everywhere and he's a rockstar wherever they go. People literally cross the street to come see him. He's stubborn and they have to be more careful of him than I have to be with my dogs (he's having a horrible time adjusting to the high humidity and hot weather we've been having).
I have 2 beagles
and the lazy one in my sig picture
Beagles are one of the best breeds to have around kids. They are affectionate, hearty, they love to play, and are affectionate. They are also the #1 problem solving breed. In other words if they are presented with a problem, they will solve it. Usually the problem is how to get out of the yard to chase the cat, or how to get food. My Roswell will open up doors, the fridge, turn on the ceiling fan, turn on the tv, and put down the car window. They also move the chairs to climb onto the kitchen table to reach the counters.
These are not dogs you can let roam off leash or have an electric fence with. Their nose leads them. But they are extremely loyal, affectionate, and fun. and they're pretty healthy dogs too.