Best Marvel Comics for Kids?

I love reading to my niece and nephew (under age 5), and I want some way to introduce them to some good old fashioned superhero stories (I'm a fan of movies/shows like X-men, Avengers, etc). Wolverine and Spiderman are my favorite, any comics including those? I've only ever picked up like three comics in my lifetime, so I don't know where to start. Any ideas? Preferably minimal gore, maybe more classic stories? idk. (I feel like wolverine and minimal gore don't go together tho haha)

Thanks