I want to know the breed of my guinea pig.?

It's already been a week since I got my guinea pig Angus. He has rosettes all over his body so I thought he was an Abyssinian. But when In was reading this article about guinea pig breeds, it seems like Angus is a Crested one too. So he has rosettes and a white crested head. And I read on the internet that Crested have smooth hair. But Angus' hair is all like an Abyssinian because of the cowlicked rosettes. I also read that Crested and Abyssinian cannot be bred together. So there. I am confused. WHAT IS ANGUS????