I don't feed premade raw (no such things in my country- yet) but my younger cat does eat raw, I just "fix it" myself. She actually eats chicken wings whole, no need to cut them or grind them, but to get some offal and occasionally supplements into her, I do make a mix of ground chicken wings, various meats and organs for her.
Even though cats most definitely do need the bones, I also feed boneless meat quite often, as there is plenty of calcium in the bones I do feed, I don't believe adult cats need quite that much calcium as she would get if she only got meat on the bone (and the raw meaty bones would be 50/50 meat/bone). The cat has gotten tired of chicken (with bones) so sometimes I feed her more meat, but then I do add some ground egg shells into it. She can also eat the smallest parts of pork ribs, and sometimes gnaws on oxtails (the smaller ones).
I got the cat when she was about 4,5 months old, and I immediately switched her over to raw, no problems with her. My older cat, who has eaten almost only kibble for her 5 yrs, will not touch raw foods no matter how hard I try. And I've tried off and on for 2,5 yrs now, ever since I began feeding raw to my dogs! Cats can be so difficult sometimes.