All credits to the data and images go to swgoh.gg. Thank you very much that I can use the data for this overview!
Check their website and sync your data from Star Wars Galaxy of Heroes - it's just awesome. They do a great job!
Every table shows the most used mods players use. This tool has checked the top 1000 player collections from the collection leaderboard and 83698 characters and their mods used - all this data is present at swgoh.gg.
Each table cell shows you the mod type (or mod set) in bold. On the second line it shows you the primary stat of this type of mod. The value in brackets is how often this type of mod is used.