I've shared some of my Anko code. Don't remember whether it was in #anko or in #codingconventions, both have been lost in Slack history 🙂
I have no complex layouts. 🙃
While using Anko DSL, I typically prefer two-space indentation to fit lines easier. I also set adapters, decorations and all these things in Fragment's onCreateView. Adapters are typically represented by anonymous classes and contain item views and/or binding code, so all fragment's UI is quite monolithic and declared in a single place.