First of all I recommend a shelter or a breed rescue organization rather than a breeder if what you want is companionship and you don’t care what kind of dog it is.
I tend to prefer herding breeds, around 50 lbs. Some of the dogs I’ve owned have been barkier than others, but they can be trained.
Shelties are great, smart dogs, but they can be barky, and they need regular brushing (as in, daily). High activity level, they will also need walks and playtime, a lot.
French bulldogs or Boston terriers are cute dogs with lots of personality. Small. Again, some barkier than others. Low activity level, and they are nice lap dogs.
Mutt: Mutts are great. If you get an adult dog you will know what you’re getting. If you get a mutt puppy you could be surprised at its eventual size, but the paws of a puppy are a pretty good indication. Large paws= big dog.
You might consider a cat. They are less trouble than dogs, can be left alone longer (since they don’t need to be let out). The great thing about kittens is, when you get them they are about as trained as they’ll ever be. They are good companions. I’ve got two right now. They are both friendly, but one is a lot more social than the other, as in, wherever family members are, he is there. The other one might be, or he might be hiding in one of his secret places having a nap. Cats never need to be walked. They do need to be played with, or at least the ones I have now do. These two are a year old and they get into a lot of mischief, usually involving dragging something out of a closet and leaving it where it can be tripped over.
Cleanup: I will say, I never think, when getting a puppy, “Oh, now I am going to have to pick up a ton of dogshit over the life of this dog.” So it’s good to think of that now. I use the plastic bag approach. Put my hand in, pick up the poop, turn it inside out, tie it. Then walk around carrying a plastic bag of dogshit until I find a proper receptacle, which sometimes isn’t till we get back home. It’s not pleasant to think about but my dog is worth it. The worst is in the winter, when he poops in the snow and then it kind of melts its way through the snow and freezes to the ground, yuck.