What Breed Is My Puppy?

Meet Buddy, he is 5 months old, born on the 19th of May. We were told he was a Cavapoo. We have another Cavapoo, Barney, you can see them pictured together at the top (Buddy is on the right), but they don't look anything alike! They're both bonkers! Barney has the curled tail of a cavapoo, but Buddy's tail is much straighter. His legs are really long and his paws are huge for a puppy who is just about fully grown. I've done some research and thought he may have some springer or cocker, but he seems to have the face of a Golden Retriever. He definitely has poodle because his fur is so wavy, but then again, it's so different to Barney's curly fur, I can't be too sure. He is quite small and the size of an average Cavapoo, but we really don't think he is mainly because of the faces and furs being completely different. Please help us, any suggestions would be amazing :)