Whispering is the classic ASMR voice: close to the mic, breathy, and deliberately quiet. These creators build most of their catalogue around it, from whispered rambles and trigger assortments to whispered roleplays.
Whispering is the most common voice in ASMR, so these channels cover a wide spread of content. What they share is that the whisper is the default rather than an occasional choice: most uploads, from chats to roleplays, are delivered at whisper volume, and a channel's back catalogue usually carries the same voice across several formats.
The channels differ mostly in what surrounds the voice. Some are built around rambles and chats that follow whatever the creator wants to talk about, some read stories or articles at an even pace, and others use the whisper as a thread between trigger sounds. Some creators move their voice from one ear to the other, while others stay centred for the whole video.