I buy medium-dark roasts for espresso, and pay attention to a proper extraction ratio.
I've moved countries 10 times now, and one brand that is consistently available across the globe is Borbone Blu. They are not exactly the number 1 beans out there, but easily an 8.5/10 overall, and really exported globally from Italy.
Here's one seller I found in the US, but it's literally the first hit on google, so I'm sure there will be more if you keep looking: https://piazzamercanti.com/products/borbone-espresso-beans