Voting Results: Champion Update & Skin Thematic - League of Legends
LoL Champion Tier list, based on the amount of rule34 search results the champion has : r/LeagueOfMemes
Champion Popularity from Patch 4.6 to 5.15 : r/leagueoflegends
Champ Popularity: Mixing Math & Art – League of Legends
Hardest champions to balance in League of Legends - Gamezo
Riot Blaustoise on Twitter: Data on the visual appeal of skins by region : r/leagueoflegends
Champ Popularity: Mixing Math & Art – League of Legends
In case anyone is interested, I found Ornn on the popularity chart as of patch 10.12. (I darkened the font and circled it for visibility) : r/ornnmains
Poll reveals which League of Legends champion players would like to remove - Millenium