Rainy Saturday has some good footage compilations. This tornado is infamous for throwing a truck across town and denting the water tower.
Doctor Prowl is a small channel getting into the disaster true horror subgenre of content, he's got some tsunami compilations and stuff too. His audio is terrible but he digs up some obscure videos for his up close series and lets them play in full after talking about them, which is nice.
Carly Anna WX is a sweetheart with some deep dives into notorious storms but more meteorology than real life horror. Her Hackleburg video is awesome though.
I can't not mention
Convective Chronicles but he's all science and no scary videos. Interesting if anyone ever wants to learn more about predictions and radar reading.
Swegle Studios is a likeable guy more on the entertainment side and his Halloween videos are a lot of fun.
Alferia has an annoying voice but the videos are pretty good.
Tornado Forensics doesn't have a lot of videos but what they do have is cool. Takes all the videos they can find of a particular storm and syncs them chronologically so you can see the tornado from different angles along the track.
This list is already getting long enough without including chasers but
Pecos Hank is the comfiest tornado channel on YouTube. His yearly recap just came out a few days ago.
Avoid Tornado Titans if you hate troons, the presenter is an obnoxious AGP and for some reason they're the Linus Tech Tips of tornado content in that no matter how many times you remove them from your recommendations they just come back.