Diferent cultures have diferent traditions. Since cristians are alsot everywhere and coca-cola took advantage of the cristian celebration of cristmas, it is now kinda massive and wordwide when it wasnt like this not so long ago.

How many Muslims in MAU? Well I dont know which religion does each member have so I cant answer you :v

Seba that 'tutorial' or idk how to call it is pretty well explained idk if someone has alrady done one like this, maybe put it somewhere, like our group or maybe translate it to spanish (after all u did it) and send it to Hip-Uni tho idk if that org is still alive.

From my point of view everyone has the same God but they give it diferent names, about the other secondary gods/etc they are pretty much the same but have diferent titles/names.
That's just my humble opinion tho