It's been uploaded on the Paradox official Wiki since, but I've made study on this:
The Standard, unspecialized Colonists want: Social, Relaxation, Shopping.
Can be fulfilled with just a Bar and a Grocer.
I'd recommend every dome has at least these two buildings.
Then, when Colonists do specialize, they lose one of these interests and gain a new one. The scientist for example, loses the Shopping interest and gains Gaming.
Scientists want: Social, Relaxation, Gaming. Can be fulfilled by adding an Electronics Store (or Casino)
Security want: Social, Relaxation, Exercise. Can be fulfilled by adding a Gym.
Engineers want: Relaxation, Shopping, Dining. Can be fulfilled by adding a Diner.
Geologists want: Social, Shopping, Drinking.
Botanists want: Relaxation, Shopping, Luxury. Can be fulfilled by adding an Art Store.
Medics want: Social, Shopping, Luxury. Can be fulfilled by adding an Art Store.
My large main population dome (where everyone waits for jobs to open up and the only dome where the genders mingle - at least until Paradox gives us birth control) has all these buildings (Bar, Grocer, Electronics Store, Gym, Diner and Art Store), but specialized domes that only need one class of specialist and screen for them, need just three service buildings. This keeps them small and focused.