In 2.0.35 factorio added an option to drag icon around in a bunch its UIs.

If it's technically possible to implement would've been very cool to have the same dragging option for this window:

Sadly, the last I saw from the devs about this was that drag-and-drop is a non-trivial implementation in the engine and so they don't have any plans on adding it to the modding API. I should be able to at least implement some functionality to reorder tags though, so I'll look into what I can do there.

Sounds great cos getting the exact order you want is a pain rn

The new update includes functionality to reorder tags in the GUI. It's the closest approximation to drag-and-drop I could think of, hopefully it helps!

Thanks for the update, it helped a lot!