There are cereals made of flax. Gluten free cereals are made of rice, and other grains that will raise your blood glucose levels as high as wheat will. There are many harmful things in all wheat, so Dr. Davis recommends no wheat--not sprouted, ancient, etc. If you are on a low carb diet, it would be good for you to read WHEAT BELLY. It's about way more than losing weight. I'm on that way of eating (not a diet!!) and in 19 months have lost 60 pounds (size 20 jeans to size 12), and my blood sugars are all in the normal range (I was at 110 fasting--prediabetic when I started this.) My arthritis pain is all but non-existant (only hurts if I accidentally get wheated or eat sugar) and I don't have acid reflux anymore. I'm off all meds for these conditions! You can ask more questions and get great answers on Dr. Davis's facebook page--Wheat Belly. It's not a group, it's just a regular facebook page.
The best non grain cereal I have ever found is the recipe for granola on www.satisfyingeats.com . Melissa has developed a truly tasty cereal and it is difficult to eat more than 1/2 cup. It is so filling and delicious. She has a lot of grain free suggestions for breakfast too.
I add three times the amount of coconut she recommends though. Use the large unsweetened flakes because they are most like corn flakes or wheat flakes that you find in Kellogg's type of cereals. It is also helpful to soak all nuts for about 6 hours to break down the seed coatings which make nuts hard to digest. See also www.westonaprice.org for details about how to traditionally prepare food.
Interesting that after about 1 year on the Wheat Belly diet I seem to have lost interest in cereal and drinking milk altogether. I have thrown out my last several purchases of them, un-opened. I guess I have quit them! I have lost over 50 lbs in 15 months and have gone down 3 pants sizes.
For awhile I was into Mesa Sunrise as Pengel recommended also, which I found at a Natural Grocers market. For off-the-shelf gluten and oat free (I'm intolerant to oats), it was the best and best value I found. Gluten-free often is a code word for "more expensive" for dry goods.
As I mentioned once on the lifestyle for over a year, I really don't crave carb-y foods anymore. I will a few times a month indulge in a small gluten-y item (or eat a cheeseburger with the bun) but overall I don't buy any processed food anymore, which has reduced cravings even more. I still eat modest portions of rice, corn/tortillas, potatoes and quinoa, but that's about it, limiting them to once per day if possible. I also still eat fruit as well. I want natural sources of as many nutrients as I can.
Good luck in the search for a better cereal but over time you may find you won't want it anymore.