judaism-simplistic no intermediaries ie saints, Jesus as the son etc. however have to be born into the relgion

catholicism-simple concepts such as love they nieghbor except praying to saints, intermediaries such as popes, priests ect.

protestantism-some what more simplistic ie no popes, priests etc. however more splinter sects

islam-similar to judaism and christianity (jesus is a prophet) no intermediaries saints etc. however controversial and violent sects ie wahabism etc. (though peaceful muslims do live in indonesia and south asia).

hinduism- somewhat pagan but technically monotheisitc due to all gods being apart of one God

paganism- depends on the religion multiple gods