Cleaning the System is a platformer where you jump through levels as some kind of pogo stick. The movement is really fun and if you bounce well you can build up a lot of momentum, which lends itself to speedrunning.
There is also a free version of it from the GMTK game jam where it placed very well
I recently heard of odysee and was surprised to find out that some big channels like Veritasium or Fireship seem to already be on there