Slice into layers?

[paulfh]

I'm familiar with how to slice an image into separate images via Slice Using Guides, but what I would like to be able to do is slice into Layers within the source image. 

I know I can do it by manual selection but when creating a lot of slices it can become too time consuming and it can be tricky to get the slice sizes right. Does anyone know if there is a plugin or script available that can automate this process? What I would ideally like is an automatic way to:

Select number of equally sized slices
Select whether they are done horizontally or vertically
Have them cut and pasted into new Layers

GIMP 2.10.34 - Windows 10

Thanks
Paul