I use the ol’ Italian trio: rosemary, thyme, and oregano. They all complement each other. And, as a secret shortcut, they’re all in dried Italian seasoning — so you can just use some of that! Light thyme and peppery parsley are really excellent choices too. And then there’s sage. Powerful, earthy, peppery, and even lemony, it adds an unmistakeable flavor.  My hack for potato stacks is to use whatever herbs I’m using in my main dish to tie it all together!