Want to really get into cheese, but got a sensitive digest system. What are good cheeses to start with?

I got a sensitive digestive system but still want to really get into cheese and try cheeses I've not had before.

I mean this is the dream :p https://memes.yarn.co/yarn-clip/0bb7bfb0-2424-431e-b4bf-04c4df225568

Anyways, I've in the past I've had mozzarella and parmesan on pizza of course. So maybe I should start with them, but then where to go? Gouda? Blue Cheese? Provolone?