I'm interested in this game and it's speedrun from the trailer and was curious why theres no switch/console sub categories?

Traditionally, platforms are not separated into different categories. If you look at the leaderboard, to the left of the date you can see which platform a run was done on. The reason everything is PC is because there are currently no speedruns submitted on any device besides that

As FatMan922 said, there have not been any runs submitted on consoles. We have tried to get some console runners in the past but they never did runs.

Usually leaderboard splits happen when there is some mechanical difference between the platforms, or to prevent problems with version differences. Included to that, other than control scheme, the game is identical as far as we know on all platforms. (atleast right now, as we are currently running on current patch, but there are older patches with their own jank).