I just joined this site specifically for this thread lol. I am a fan of most of the reactors posted already, so I loved seeing this. PopcornInBed and Rob Squad Reactions stick out, and I also have no clue where the "Rob" part of that name comes from lol.
A few to add:
James vs. Cinema
YouTube channel
He is (or was) a film student and always adds some interesting takes on what he watches beyond just the instant reaction of the moment. He also reacts to some excellent movies and not just the standard blockbusters like Avengers and LOTR. He's done some videos reacting to Primer, City Of God, Boogie Nights, and Blue Velvet among others. And his reactions to powerful or really funny moments in the movies he watches are always fantastic. He's also currently reacting to Breaking Bad.
LM Reactions
YouTube channel
I can't remember where they are from (outside the U.S.) but they are both enthusiastic and react solely to TV shows I believe. And both are
very easy on the eyes lol...they are also emotional so if there are touching scenes or heartbreaking scenes they definitely let it show in their videos. They also offer some surprisingly good takes on episodes of shows that I hadn't thought of before, or that I had not heard other reactors mention. Sometimes they lapse into their native tongue (which I forget what that is) but put in subtitles for those brief moments.
Movie Night at Jacqui's
YouTube channel
She's relatively new, and is (I believe) an aspiring actress, so she's more than comfortable in front of the camera...and like James above, she gives some additional insights on what she's watching beyond just her reaction. She reacts to both movies and TV shows, like The Last Of Us and Pulp Fiction, among others. She tends to predict what's going to happen but not in a way that's annoying or anything. And it's enjoyable to see when she guesses wrong lol.
Katie o'shaughnessy
YouTube channel
Just recently started watching her reaction videos. She has HUGE Bambi eyes, a ton of tattoos, and a very thick Irish accent. She also comes across as smart and tough, and just watching her react is enjoyable. I think she only does TV shows, and she only does like 2 or 3 shows at a time instead of 15 shows like other reactors. So you don't have to wait long for the next reaction video for a show.
The Homies
YouTube channel
This group is from Russia but all their videos are in English (love their accents, though). And I think every single female reactor on this channel has an OnlyFans account lol. Actually, I think half the female reactors on YouTube probably do. At any rate, I love their enthusiasm and genuine emotional responses...there are about 6-8 different women reactors on this channel and they make videos in different pairs or groups from one video to the next. Ellie has the most expressive face and Michelle is probably the most stoic in her facial expressions during reactions. They cover movies and TV shows. Every once in awhile, a pudgy white dude joins them lol...but he's cool, too.