Yasuo still has ~70% pick/ban in Platinum+ ranked, and the rumour is that you tend to see two per game in non-draft modes.
Lee Sin is also in almost every game.
The current jungle favours strong-gank junglers even more. Junglers like Lee Sin can easily clear all the camps and still spend most of the game camping a single lane.
At least one of the solo lanes in most games is decided solely by which jungler camps it more.
Assassins have been reworked to have more counterplay and longer time-to-kill, which means that they are often unable to even kill a less-fed ADC in a 1v1 situation. Basically, all of the assassins now feel a bit like trying to assassinate someone as Evelynn.
Without assassins being able to take out ADCs, that class has become even more important, with the better ADC often deciding the outcome of the game. Late-game carries like Twitch and Vayne especially are extremely over-tuned right now, and often the team with one of those champions has an enormous advantage.
Supports got an insanely powerful item that lets them heal their entire team for about half of their health after a delay.