Dogs listed in Dogs Like Mine are other Embark dogs that share a similar breed makeup to your pup. The higher the score (100 is highest), the closer in breed breakdown the pup is to yours. Dogs listed in Dogs Like Mine are not related to your dog, and do not share DNA with your dog.
Your dog's relatives are other Embark dogs which DO share DNA with your dog. The larger percentage of shared DNA, the closer 2 dogs are related.