Can you mix a lionhead rabbit and jersey wooly?

Yes, just make sure that they are about the same size and make sure that they are neutered or spayed. Any rabbit can be put in a cage [together] if they are neutered/spayed, friendly, and possibly the same size.

Another view

Every rabbit should have it's own cage even if it is neutered/spayed. Rabbits are very territorial and putting them in the same cage is not a good idea. This could turn the most docile animal into an ear ripper or worse. Believe me if you had ever seen a rabbit killed by another rabbit you would not risk it by putting your beloved pets in the same cage.