What are your go-to YouTube channels to fulfill your Tom Scott itch now days?

I'm kinda surprised no one's mentioned them yet; but if you wanted a long-winded version of Tom Scott with a focus on technologies, take a look at Technology Connections
- Here is an alternative Piped link(s):
  https://piped.video/@TechnologyConnections
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- This guy‘s awesome! Found him years ago when I first read about Laserdisc and his videos were fresh, like 2-3 months old. Been a fan ever since.

jay foreman, i suppose?
- Map Men! Map Men! Map! Map! Map! Men! Men!
  
  unfinished london!
  
  Men men men men...
- Map Men

As I anticipated, I've yet to find a replacement for most of the things I enjoyed from Tom.
My source of uniquely emoted monologues of the British persuasion is often somewhat filled by "Lost in the Pond".
My engineering/hardware fix is a mix of many channels, a "newer" channel some may not yet know would be "Inheritance Machinery"
Funky Art projects/style has lately been Ali Spangola, she's a real hoot
Unique Items of a vaguely educational nature would be Objectivity as well as Steve Mould
And Gameshows and the like from DropoutTv, thoughve I've yet to find anything like CitationNeeded.
Tom's a hard guy to replace, but thats not really something I've tried to do anyways. I just get my fixes from many youtubers who also provide unique and wonderful content too.
- You might enjoy CGP Grey
  
  Hexagons are Bestagons!
- Seconding inheritance machining. Love the dry humor. In general a very charismatic guy.
  If you enjoy that type of content, and don't know him yet, also check out "this old tony". He leans more into the comedy side of things but his videos are also still very informative
  
  I like the cut of his jib, just never connected with any projects of his really.
  Do I sense another follower of the man I adopted as my new dad - Adam Savage?
- And then you see Adam Savage geeking out, nearly in tears about gauge blocks in his workshop.

The Tim Traveller is very similar, they're actually friends too which is nice.
- He's great and I think he's crossed with other similar content creators too including Tom Scott (or I could be wrong about that last one)
  
  There's a video about a rail replacement helicopter in which Tim states that Tom wanted to do a video about it. But he was busy at the time, so they sent the tip to Tim instead.

Vsauce
Veritasum
Adam Savage
Stuff made here
Mark Rober
Rex Krueger
Wisecrack
- Steve Mould would fit that list

That's a persistent itch.
Here are two channels I think Tom's viewers would appreciate.
Alexis Dahl makes interesting videos on history, science and life in Michigan.
The Tim Traveller makes ridiculous, yet strangely informative videos about locations all over Europe.
Both channels consistently provide answers to questions I hadn't thought to ask. Both do it with a genuine sense of wonder and a lot of heart.
- I'll second Tim Traveller. Consistently interesting and he has a real knack for finding offbeat-yet-fascinating places to visit in Europe.
- Here is an alternative Piped link(s):
  Alexis Dahl
  The Tim Traveller
  Piped is a privacy-respecting open-source alternative frontend to YouTube.
  I'm open-source; check me out at GitHub.

Jago Hazard
Technology connections
The B1M
Kurtzgesagt
Colin Furze

Steve Mould, Veritasium?
- Veritasum is amazing. Recently I rediscovered them with the video about the SAT question everybody got wrong. My mind was blow.
  
  Veritasium is up there as one of the best creators on the platform, really good at generating interesting topics, even when talking about the mundane.
- Been watching a bunch of Steve Mould myself, surprised not to see him mentioned more in this thread.
  
  Steve mould not doing location filming maybe could be a reason. I think he scratches that itch talking about interesting physics phenomena that Tom had though.

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! 😂)
Hbomberguy
- Never knew Wendover and HAI were run by the same person, wow 😳
  
  They aren't. He's confusing Wendover and Jet Lag. HAI hates Wendover's guts because his channels keep stealing viewers and subscribers from HAI.
  (/s)

I never discovered Tom Scott until his announcement that he was taking a break which many other channels made videos on. Looking through them, as well as seeing the suggestions, I can kind of get the gist of the channel. Suggestions I haven't seen yet:
Climate Town - climate and environment related
Rebecca Watson - science and critical thinking
ContraPoints - philosophy related
Adam Conover - Currently more politically oriented but Adam Ruins Everything was more general

Make sure you subscribe to his newsletter if you haven't yet. He often shares interesting finds from the internet and videos worth watching about all sorts of topics.

Atomic Frontier is in a somewhat similar vein, though his uploads aren't as frequent, they are of good quality.
- I think the first time I saw him was when he covered as a guest for Tom?

I heard Cary Huang (known on YouTube as carykh) does some cool STEM related stuff, and... I guess some kind of live competition as well? It's too late for you to join it though.

The CBC has a really great series called "About That" and the vulgarisation is on a whole other level.
It's geared around Canadian news and politics half of the time but it covers international events as well.
It scratches that itch, just on much more current topics.
- Here is an alternative Piped link(s):
  About That
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  I'm open-source; check me out at GitHub.

I was going to edit my other response but I'll just make a new one so OP sees it.
Calum Raasay , out of Scotland, makes some outstanding historo-scientific videos. He travels around quite a bit too.
Another that I haven't seen mentioned is Our Own Devices , he actually used to write for Simon Whistler. Most of his videos are shot in-studio, like Technology Connections and Joe Scott, but he also ventures out into the field for special projects. It's a similar mix to what you'd see on Forgotten Weapons.

Mark "Hyce" Huber is a major rail fan, and does a bunch of related stuff. Works at a railroad museum, used to work for a modern freight railroad, has been involved in the rail sim world, and does educational, usually railroad and train-based videos on the Google video scented advertising platform.
Hyce and some of his buddies actually borrow the format of Citation Needed/Two Of These People Are Lying during their "3/4 of an idiot show." Just watch out for the Mystery Citrus!

The phrase “Tom Scott itch” makes me think of an itchy butthole. Not sure if that was intended, but that’s how I took it

TomScottnude.com
- I'm not doing it. No. Bad!
  
  :-( doesn’t exist

engineerguy
Bill Hammack does less travel/outdoors content, but similarly explains Science in a clear manner.
All videos are free to share under a Creative Commons licence CC-by.
- ... and Newpipe recommends good similar videos, if you turn it on, in settings.
  Like in this collection, Steve Mould has a clear and interesting Science presentation of common or curious topics.
  
  Steve Mould is great. I finally have an intuitive understanding of how diodes work because of him.

Who the hell is Tom Scott?
- He used to produce very interesting science and technology content on YouTube. His videos are worth looking up.
  He still does a podcast called Lateral which I enjoy.