toward other religions.

I am a Catholic atheist (which is a long story that I won't bore you with) and so I have familiarity with the Catholic church. Catholics (both individually in my experience and as a matter of official church doctrine) have a more ecumenical attitude toward the Episcopalian and Lutheran churches and a more skeptical view toward Mormonism and Scientology. I generally understand this is because of the liturgical similarities among the Catholic and Episcopalian and Lutheran churches.

I don't have similar familiarity with how other faiths view each other (or how other atheists view the various faiths) and I am curious about this issue.