Civ Specific Great Historians

[Dracosolon]

I guess and diplomatic popularity, but to be honest the existing ones plus population seem fine to me.

 

[freethink]

How about one based on the number of state-religious buildings

Most Faithful

Most Apostatic (combination of low-state religion buildings including pagan temples, though after 500 a civ with pagan religion or secularism will automatically be here)

 

[Gen1_]

I guess and diplomatic popularity, but to be honest the existing ones plus population seem fine to me.

But what population ?
The numbers like "12" or "20" ?
Or real population of cities ?

 

[Derdan]

It refers to the real population (the 8 million people of a size 20 city), not the number of pops. Though both are interesting metrics.