add more misc. code examples of commonly found non-standard styles

[marvinsmith4]

Add code examples of what we've done in the past with non-standard style issues.

[flintsteel7]

• Step 1: Gather data
  • [x] (Peter) download slack history (as much of it as we can get)
  • [ ] perform searches on slack to find relevant info
• Step 2: Identify what to add and where
  • [ ] create individual issues where necessary