Ictaria - thematic map series

This map series is the most recent iteration in my worldbuilding project. I already created a few versions of this world map in the past, but none were as elaborate (and as realistic, hopefully) as this. I completely redid the terrain, and then used that as the backdrop for a series of maps. At the moment there's three — political, linguistic and topographic—but there will definitely be more. Maybe a map showing the different religions and their distribution throughout the known world?