Homemade ground mutton burger and kebabs, How fatty are they? 70:30 or more?

They look way fattier than 70:30 to me so im not sure exactly. It may not look like it in the photos but the ground meat in the package was pure fat it looked almost purely white with a bit of red. I oven baked them and they were incredible next time I'll have to mix them with ground beef as it the fat melted because of how fatty it was