I think one of the points you're getting at here is that there's many different ways to solve a problem in Scala, versus something like Python. It's definitely true, as can be seen when comparing a codebase like Lift (https://github.com/lift/lift) with Play (https://github.com/playframework/playframework). Both are two MVC frameworks written in Scala but have vastly different coding styles.

The company I work for is a Scala shop, and we've found success in codifying our coding style using the Scalastyle linter. The combination of a linter and peer code reviews has been very helpful for us in figuring out which language constructs and libraries we use and which we shy away from.