Followers of a channel on WhatsApp maintain their privacy as they cannot see who else is following the channel or the personal information of other followers. Admins, however, can view the profile picture along with reactions and votes (if allowed by your settings), but they do not have access to the phone number or full name of followers.

Who can create a WhatsApp channel?
Channels can be created by individuals and businesses. Although channels have already begun to be implemented, they are not available to all people or all locations.
Will I receive notifications about all content posted on channels?
No, you will only receive notifications from the channel you want. To do this, you will need to adjust your preferences on the information page of each channel or activate or deactivate the notifications icon at the top alerts and sounds off notifications.