I was bored so I made charts for all the champions based on their win rate and pick rate across all ranks in the lanes they are played. : r/leagueoflegends
Games of Legends | In-depth statistics about League of Legends competitive scene. - Part 3
Popular Top Lane Champion Matchup Win Rates : r/leagueoflegends
Champion experience and Win Rate Correlation - based on 47575 games. : r/leagueoflegends
League of Legends: Lillia Debut with a Shocking Low Win Rate in Jungle - Not A Gamer
LoL op.gg: how to view champion statistics, tier lists and ranking - Somag News
Don't Play Yuumi (Yet): New 'League of Legends' Champion Proves Difficult to Pilot
NERFPLZ.LOL Highest Win Rate Champions of the Week: Taric, Evelynn, Singed | NERFPLZ.LOL
Viego's win rate is abysmally low, following his League of Legends release
Jhin, Orianna, and Shen have the highest win rates of any champion with at least 10 played games at Worlds 2020 - Dot Esports
Highest Win Rate Champions in Patch 10.5
The winningest and most popular champions in Season 10 - Inven Global