I agree with paper plane but double the bourbon or it’s too sweet. So 1 oz bourbon 1/2 oz everything else, or 2 oz bourbon 1 oz everything else, depends on the day.
My favorite Amaro forward drink is 1/3 Heirloom Pineapple Amaro, 1/3 bourbon, 1/3 pineapple juice or tepache, juice of half a lime or quarter of a lemon.
You can also just shake with ice any Amaro, hard, with just a tiny little bit of lemon and sweet, and few grains of salt. Pour over crushed ice and enjoy - add sparkling water if it’s too dense for you to taste - this lets you really taste and understand the flavor and is nice as an aperitif. A spritz of any of them is another way to do that.