How to delete files from the Home folder on OneDrive

I do not synch any folders to OneDrive, but do copy some files manually (actually using Nero Backup).

I can see these files in My Files when I go online to OneDrive. When I go to the Home folder (above the My Files folder), there are a few files there as well, which can be opened but not deleted. 

I am unclear what these are for.

If I go to my own computer and look under the OneDrive folder, I can see all the files that I have manually backed up, mostly with a blue cloud icon besides them. If I click on one of them, it seems to be uploaded to the Home folder on OneDrive and it now shows a green tick (implying the file is available on my computer, but I can't see it under the OneDrive icon, so where are they being stored on my computer?)

Don't see why it is doing this. The files are already available in the My Files folder, so why a these appearing in the Home folder as well? Is it just a link to the file in My Files?

These just represent clutter as far as I am concerned, but there does not seem to be a way to remove all these files from the Home folder online.

Sorry this is a bit rambling and may be confusing, but it has confused me.