Kitten Food Plan ☺️

We have recently rescued two stray kittens (well they pretty much just picked us and haven't left since-which we happily accepted haha).

I'm trying to figure out what would be best for them to eat. I think they are around 5 months old but we are going to the vet on Wednesday. So far they have mainly been on kibble, but I have been looking into wet food options - with past cats we were always told to go for kibble so I don't know much about any of the wet food brands.

Does anyone know about the brand O-Life? I like that it's grain free and it might just be marketing that is working on me, but it looks like it could be a bit more "natural"/have less cr*p inside it.