Dry food regardless of trademark: good for teeth and metabolism (high fibre food) but if the cat doesn't drink enough = kidney damage on the long term if it is the only food

Wet food regardless of trademark: not so good for teeth (too soft: plaque and caries) if given as the only food, but has enough moisture. Some cats simply don't drink enough.

I do it like this: In the morning wet food, in the evening dry + a wee bit of wet food. Large bowl of fresh water next to it. Even the strays outside prefer the water bowl to other sources. (I have no spring/pond nearby though)

And I change trademarks use 4 different ones.
Kiya

The only Iams I know is the food for cats with a kidney damage (medical food) - but Gyp, who was on this diet occasionally for 13 yrs didn't really like it (she was probably born with metabolism probs)- I had to mix it and coax here to eat that. No further info on this trademark.