A rule of thumb from Marxism is that all religions, whether they believe in a god or not, believe that consciousness takes precedence over matter (referred to as 'idealism' but its a pecular Marxist definition). What basically that means is that all religion assume that matter/nature cannot be its own cause, and therefore must be "caused" by something beyond,above,behind nature; i.e. a god, spiritual force, etc. so a common denominator could be "world creation" arising from the 'spirit'/'soul'. this isn't limited to creationism (that spirit creates matter) but also includes "free will" (in which mind changes matter). However, this sort of cuts through alot of subtlies in religious belief and is something of a straw man.
We also tend to think of "religion" as one of the abrahamic religions, judaism, christianity and Islam. so there is a cultural bias in the definition of what is a religion arising from when european anthropologists studied "other" religions in the 19th century outside of the abrahamic tradition. This definition, also reflects this because of the emphasis on a 'prime mover' for creation as well as the authoritarian norms of abrahamic religions in which the creator decides the social/moral order.