Bill Nighy is so wooden you could believe he escaped from a thunderbirds set by cutting his own strings
Judi Dench is excellent at playing the Luvvie Judi Dench. I haven't seen her playing anything else.
Simon Pegg is good at playing the vaguely affable bloke down the pub, but so are 5 million vaguely affable blokes down the pub.
Tom Hanks does an excellent impersonation of his own Madame Tussaud's waxwork.
The ubiquitous Ryan Reynolds is not an actor, but a form of cinematic wallpaper. I suspect he is not a person but a virus that infected hollywood's CGI machines and inserted him randomly into several dozen movies.
Chuck Norris, Liam Neeson, Gerard Butler are all interchangeably crap - you could slot any of them into any of the others movies. Steven Seagal is much the same but could probably kill you in various nasty ways in real life, which means he's not even acting. Deleting all of their movies from existence would make the world a better place.
Jennifer Aniston, Rebel wilson and Adam Sandler are reliable turkey indicators. If they're in a movie, it's a turkey - switch channel. Chevy chase also gets an honourable mention in this regard.
Natalie Portman and the kids who played Anakin skywalker in the star wars prequels gave a masterclass in how to get on the big screen with acting skills that would not pass muster for the average reception class nativity play.
Daniel Radcliffe, Rupert Grint and Emma Watson were all wooden in the first HP movie. By the later movies, I thought Rupert Grint and Emma Watson had improved a little with time - you could tell they'd had acting lessons, though someone should have told Rupert there's more to acting than pulling faces and that sometimes less is more. Only Daniel Radcliffe remained completely impervious to instruction. With half a dozen movies under their belts, Rupert and Emma might just have made the cut for a school play, whereas poor Daniel still wouldn't. I suspect the original casting director confused the deadline date, woke up with the mother of all hangovers the day of the deadline, went to their nearest primary school and said "right - you three...".
One of the better actors in recent star wars sequels was the CGI'ed resurrection of governor Tarkin. If you can be outclassed for charisma and humanity by a CGI bot, as most of the above would be, then you are not an actor in any meaningful sense.
FWIW I think having a go at Dwayne Johnson, Jackie Chan etc. is missing the point. They're the clowns at the circus. and if the custard pies are on target then they're doing their job well.