Sentence examples for not in questions from inspiring English sources

Or "a replacement for am not in questions that would avoid the stuffiness of am I not, the stigma of ain't I and the supposed ungrammaticality of aren't I"?

His competence is not in question.

His own integrity is not in question.

Hill's guilt is not in question.

His identity is not in question.

His good intentions are not in question.

This is not in question.

That was not in question.

Who's not in question?

His fitness is not in question.

"The authenticity is not in question".