There is no definitive line when it comes to dog breeds being good with kids and cats. the bottom line is that it comes from training. BUT with that being said, you can set yourself up to succeed. I think the most popular breeds for families are Bernese mountain dogs, goldens, labs, and poodles or poodle crosses.
Have you considered a rescue? It takes some time, but usually if you go through a rescue they will have their dogs in a foster home and will be able to tell you if the dog will be a good match for your family.
Have you considered a rescue? It takes some time, but usually if you go through a rescue they will have their dogs in a foster home and will be able to tell you if the dog will be a good match for your family.