Combining two separate toggle buttons (follow/unfollow + another for whether that "follow" is public/private) seems like an elegant solution to the spacing and aesthetic problems of having two butt
best practice - How to display more than three buttons? - User
Toggle to a new user experience. Toggle is an interactive service
Toggle buttons - what do you think of using them in SaaS platform
The Confusing State of Toggle Switches, by UX Movement
intuitive - Is the Three Toggle button on Bothsider easy for
forms - Toggle states display - User Experience Stack Exchange
gui design - Should a toggle button show its current state or the
4 Rules for Intuitive UX – Learn UI Design
4 Rules for Intuitive UX – Learn UI Design
usability - How can I design this toggle button to make more sense
4 Rules for Intuitive UX – Learn UI Design