Higher carb intake give me the most problems with acne and inflammation. Even certain raw fruits.
The only diet where my acne is completely clear, is very low carb, and high fat. High fat just means most of my calories coming from fat. Some people get confused with high fat diets. Since fat has twice as many calories as meat, it shouldn't visual look like its dominating your diet. But in calories it will.
See, everyone is different. Some have no acne no matter what. But get other issues regarding high carb diets.
For me, semi sweet fruits give me no problems though. Everyone is different, but I do well with blackberries and raspberries. Especially fresh cranberries my stop signal is very good. And other wild fruits. The more genetically modified from natural a food is, the more problems I seem to have with it.
Cooked meat gives me some issues, especially when grain fed. But not nearly as much problems as high amounts of raw honey, or lost of carbs from dried fruit etc. Nuts, even raw, give me more problems than rare meats.
But, the more cooked the meat is, the more problems I have. So rare meats may maybe something you ought to try. Just cook the meat less and less, until you finally just eat it raw once in a while.