Google Analytics For CRO: 12 Reports To Find Leaks In Your Funnel - KlientBoost | The MarTech Digest | Scoop.it
Report #1: Conversions by Browser & OS
Report #2: Conversions by Mobile
Report #3: Site Speed Metrics by Browser & Browser Version
Report #4: Site Search Report
Report #5: Conversion by Acquisition Source
Report #6: Conversions and Traffic by Hour of the Day
Report #7: Landing Page Performance
Report #8: Behavioral Data by Content Post
Report #9: Sessions by Landing Page 
Report #10: Behavior by Event Tracking
Report #11: Goal Funnel Visualizations
Report #12: Horizontal Funnels