Associated:
[Site Editor] Templates list screen overview
#36597

What problem does this address?

In Templates.
When clicking "Add New". There is no option to create a general/custom template.

What is your proposed solution?

We should be able to create a "Custom" template.

--

I initially added some info about it here:
Site Editor: Create consistency between Template and Templates Part - "Add New" modal/dropdown.
#36741