I am guessing you mean type, and that is a impossible question Every breed has simularitys and differences, within the breed there is differences. If you want a dog for looks that is a medium to large dog then a Border Collie If you want a small dog then I would suggest a havanses but dont spoil small dogs Any dog can be trained to how you want it. A pitbull can be the most compasionate dog if you put the time in to train it.
it depends on what you want from the dog. if you want it for security then get a german shepard, husky, maybe an Akita. if you want a very playful dog, i suggest deer-head chihuahuas( not the small one, thats an apple-head chihuahua or a toy chihuahua) or a jack russel or retriever. if you want a lap dog then get something small like a yorkie or toy chihuahua.