League of Legends Dev Tracker
This thread was added on October 23, 2019, with posts from RiotAugust.
https://twitter.com/Spideraxe30/status/1186868043676311552
He worked on Jhin, Jinx, VI, Kindred and Azir.
https://leagueoflegends.fandom.com/wiki/Blake_%27Squad5%27_Smith
Aparrently is not going to be a huge rework, with a new VFX Ezreal like - Rework probably.
OP is a bit misleading, he did quality assurance for Vi, Kindred, Azir, Jhin and Jinx but didn't work on their gameplay.
He did do gameplay work for Ivern, Sylas, Ornn and is doing Fiddlesticks atm.
Squad5 was a major contributor to the final designs of Jinx's Passive and Jhin's R and Q.