Sauces for ravioli vary from tomato basil to creamy sauces or simply butter & salvia, my favorite 😋
I used to grate abundant amounts of Parmigiano Reggiano on top of my ravioli, but the cheap surrogates available from local supermarkets are worse than no cheese.
Truffle oil instead of butter would also work well.
Tortellini, on the other hand, are usually stuffed with prosciutto and cheese.
There's also a bigger variant of tortellini called tortelloni (-ini is the plural suffix for small, while -oni is the suffix for big). But while tortelloni look like tortellini, they usually have #vegetarian fillings similar to ravioli.
Generally speaking, Italians don't eat a lot of meat with their pasta because meat normally comes with the second course.
Most Italians would find chicken pasta mildly disgusting, and spaghetti with meat balls are only typical of some southern regions, and not at all popular where I grew up: https://en.m.wikipedia.org/wiki/Spaghetti_and_meatballs
My grandmother was from one of those regions (Abruzzo), but she usually cooked meatballs in the oven or in the pan and serve them as a second course dish, often with a side of veggies or puré di patate (mashed potato). https://www.tavolartegusto.it/ricetta/polpette-fritte/