I’m a map guy (no secret there), so I really enjoyed this link that my mother in law sent me WORLDMAPPER
Worldmapper is a collection of world maps, where territories are re-sized on each map according to the subject of interest. There are now nearly 600 maps. Maps 1-366 are also available as PDF posters.
A good place to start is the World Mapper Index
Here are four examples:
Christians: (There are about 31 religion maps. Christianity is further broken down into: Catholic, Orthodox and Protestant – under which you can find other categories – not all of which we would consider Christian. )