The only cannabis that is known to have the affect of DECREASING appetite has been THCV (tetrahydrocannabivarin). This breakdown product of THC is not only hard to find, but has a very high psychoactive component. THCV is found in african sativas, as an example, look for a strain named Durban Poison or its hybrid counterpart Cherry Pie. An option is to ask for lab testing to verify that you are getting a rich THCV product.
In general, it is not the "high" but leading up to the "high" and coming down from the "high" that makes you have an INCREASED appetite. CBD products do not affect your appetite.