Uhh. RB maybe? I've seen him be overrated a ton by people who don't even watch korean games. I think he's good though.
TenZ does do really well although he's still very overrated.
Wardell just isn't being favored by the meta so I do think he's overrated is a player in a team even though he's a funny dude.
Scream is most definitely overrated because even though he does carry the team. He just doesn't bring much unique value. Like his util usage is ok but not the best. With the new nerfs to util. He will become better but over time im guessing that util will keep being buffed as that's probably riot's plan to counter power creep by nerfing everything to make sure that util doesn't become to powerful over time. But I think that players will become better with util so Scream is gonna be less valuable and people think he's the god of eu when he really isn't. There are many players which are pretty close to his level in eu and bring even more value.
Also even though im a c9 simp. I think Leaf is overrated af. And the other players on the team don't get enough love. Like wtf how does no one care about mitch and think he's getting carried. Leaf is a really strong player but he isn't as good as c9 worship him as.
Shahzam is a good igl. I won't lie. But his style of counterstratting. Requires his team to be simply better than the other team. If they aren't. Then you could run into some problems. I do think he's still slightly underrated overall. But the people that think he's the best igl. Are probably wrong. Because Shahzam's true value is his versatility. He can do so many different things. He can frag and he can play multiple roles. I do think he's still probably top 10 players in the world but he's not as good at certain roles as people think.