Food info for 3 month old kitten

We brought home a new kitten a few weeks ago who was up for adoption at our local vets office, and was appalled that he was feeding her Purina brand food which i know is total garbage with all those byproducts, corn gluten and menodine in the ingredients.   We ended up getting a bag of the Purina dry food to try and gradually wean her off of it with a healthier brand- I picked Nutro Natural since it didn't have any of the garbage ingredients Purina had, had great reviews online and it was relatively cheap compared to some of the premium healthy brands.  We also went straight for the Nutro canned food  to start (we are feeding her both wet and dry since we are at work during the day)    Does anyone here also feed Nutro Naturals and/or have any opinions of the food?  The kitten version has grains in it, but that's fine with me for now since we are still weaning her from the other food- Eventually I will switch to grain-free when she can have adult food.   I've done quite a bit of research on the top grain-free brands and it seems a lot of them have various controversial/mixed reviews from pet owners such as consistently making their cats sick with UTI's or having questionable ingredients (such as a lot of fruit/vegatable fillers).  Nutro seemed to have the least controversy so I hope it's the right choice, lol... But I was also curious about the Nature's Variety Instinct Grain-free dry-a possible choice since that seemed to get all excellent reviews from health conscious cat owners- HOWEVER, it does have some fruit like blueberries listed in the ingredients.  Any advice/recommendations?   (Wellness and Blue Buffalo were the main controversial brands btw, so I'm kind of turned off by those ones for now)

My older ones love the Nutro canned food.  The younger ones get Sheba pate and Friskies Poultry Platter pate (the only one that has Chicken as the primary ingredient.)   I dont feed a lot of dry food, and I've always just used the Iams Chicken (which used to be better than it is now, years ago, but things change), but because I'm feeding so many, it's the best choice since I can get a 22 lb. bag for $29.99.  i have always fed primarily wet food for the 50+ years that I have owned and rescued cats, and I'm pretty sure that's why I haven't had to deal with urinary stones, obesity and diabetes.  I don't leave food down for them to free feed, but if you are free feeding wet food, you can always freeze it first, then leave it on a dish and they will be able to nibble at it as is thaws.

"...appalled that he was feeding her Purina brand food which i know is total garbage with all those byproducts, corn gluten and menodine in the ingredients."

Hold on.  Not so fast.

As is often the case...it depends.

Firstly, meat by products and poultry by products are not unhealthy.  That's just an ingrained bias in the U.S.A.  People all over the world eat things such as kidneys, tripe, intestines etc...which are consider delicacies in some nations..  Even here in the U.S.A. you can find hog stomach, pig ears and cow tails in supermarkets.

There are Friskies wet recipes that are perfectly fine, meaning, healthy.  Also, Purina Beyond dry is pretty good stuff, as is Purina Pro Plan True Nature (wet).

I am more concerned about the corn gluten meal and the Menodine ingredients than I am of the animal byproducts.   Menodine(Vitamin K3) is known to be toxic to cats over time as is Carogeenan-which is in a lot of the fish flavored canned food.. and corn gluten is a very unnecessary filler as cats can't digest corn too well.   Grains in general are just extra carbs for cats that they don't need since they are carnivores by nature, but they don't seem to make too many grain-free dry kitten foods.