leaf is a better jett than yay and also flexible.
Bro plays jett, viper, kj, skye (all 4 roles)
Leaf
https://www.vlr.gg/player/7873/leaf/?timespan=all
Yay
https://www.vlr.gg/player/881/yay/?timespan=all
Almost similar stats.
But what leaf does is exactly what you need from an entry player.
Dashing in aggressively in his smoke creating space