I do not know of any naturopaths who treat cancer but I do have some links which be worth looking at> https://groups.io/g/CancerCured
Is a new group which has been formed from members who were members on the same named group on Yahoo groups which has stopped most of the activities recently. They know about alternative treatments, many of the members either have cancer or have had it. It would be worth asking for recommendations on there IMO.
Frankincense (Boswellia Serrata) this might also help any Arthritis because of it's anti-inflammatory properties. It binds to Lipopolysaccharides stopping their inflammation promoting properties. That could be what promoted the cancer. It has multiple effects against bacteria and their biofilms as well as having anti cancer effects.
The biggest problem in cancer, which is not generally recognised, is infections in the stomach which affect the digestive permeability and alter the immune system function allowing cancer to develop. There are usually multiple factors such as nervous system degradation which also affects immune system regulation, Increased Digestive Permeability and altered Methylation processes which take the normal breaks off cancer development. Then when cancer occurs by the methods which have been speculated, the human body is unable to do anything about it.