Upvote:2
There is a growing trend amongst certain Christians to eschew denominational labels in favor of the term "Christ-follower." The implication is that an ad fontes, "it's just about Jesus and me" religion trumps any group politics.
There is more about this terminology in this question
Upvote:2
In What I saw in America Chrsterton used the terms undenominational and unsectarian to describe such folks and to my surprise, it is a real word.
Adj. 1. undenominational - not bound or devoted to the promotion of a particular denomination; "undenominational religious instruction" nonsectarian, unsectarian - not restricted to one sect or school or party; "religious training in a nonsectarian atmosphere"; "nonsectarian colleges"; "a wide and unsectarian interest in religion"- Bertrand Russell thefreedictionary.com
Upvote:7
I believe the word you are looking for is 'nondenominational', as in 'nondenominational Christian'. It refers to people who don't adhere to any of the subdivisions of Christianity, such as Lutheran, Catholic, Reformed etc.
The answer is made slightly confusing because there are now churches that refer to themselves as 'nondenominational', since they do not adhere to any of the larger groupings. However some of those churches are now grouping together, thus effectively creating a 'nondenominational' denomination. But in principle 'nondenominational' is a good description.