Some suggestions I haven’t seen yet, not all of which perfectly map with Tom Scott but are still good! At least the first five of these are also available on Nebula.
Answers with Joe (starring Joe Scott. No relation, but a similar name!)
Wendover / Half as Interesting (two channels with a different vibe, but the same guy)
Mustard (cool airplane and other vehicle stuff)
Innuendo Studios
Legal Eagle
SciShow
Shaun (basically a podcast, but the guy is quite smart and he does a fantastic job considering how boring he sounds! 😂)