Simple pasta dishes like pesto or carbonara are my go-to when I’m in a hurry, cooking time is limited by how quickly you can bring the water to a boil and then 10 min for the pasta to cook.
As for pasta sauces, ragù is a bit time consuming (but most of the time you’re not actively cooking, just letting the pot simmer) but if you make a big batch you can put them in jars and freeze them and bam, free to use ragù anytime you want!