This is basically the gist of it for me. I (almost) never get 'tingles', but Fauna's soft-speaking roleplay type stuff (whether a fully scripted story like the recent exorcism one or a semi-improvised story/chatting like the potion-making or summer spa ones) are just really comfy and relaxing. And yes, she does use some common trigger sounds in those stories which normally I wouldn't be into, but it's in context, like stirring ice in a drink.
Pretty much I just want coherent speaking (even a zatsu can be good enough) because completely random sounds don't do anything for me.