We had 2 kinds of dry cat food, one the cats would eat, one the cats would not eat. We didn't know what the difference was so I went "Fine!"
Neither tasted particularly good to me, but the one they liked had a crunchy texture and the one they didn't was squishy, like it was stale Corn Pops cereal.
There is another reason to use cat food beyond the superior flavor (on which I am just going to trust you): Dog food will often contain bone meal, which is fine for dogs, but indigestible for humans (and cats). Can clog up your guts.
I have heard (and it might be wrong) that cats can eat dog food with no ill effects. They just cannot survive on dog food alone because it does not contain the nutrients necessary for cats.
Yeah it amazes me that cats can get their entire vit D supplements from food. Meanwhile humans should not go without sun. Supplements alone do not cut it