Your profile is designed like a social network and is 100% customizable.
Here is everything that can appear on it:
Profile picture
Username
Bio
Location
Website
Your portfolios
Your watchlists
Your number of followers and followings
Among all the basic information, only your username is mandatory and appears publicly. The rest only appears if you fill them out in your profile settings.
Regarding your portfolios and watchlists, they only appear on your profile if you take the step to make them public. See guide below.
How to share a portfolio?
Share your investments with the world
Regarding your number of followers and followings, they are always public and cannot be hidden.