I’m following up this thread, that found no success since 2022. Hope this time will be different. 
Imagine you have a structure of categories and subcategories. On the subcategory page you want to display a list of all of the other subcategories for your current category.
It looks like this:
- Main category
-
- Subcategory 1
-
- Subcategory 2
-
- Your category
How do you do that?
The obvious solution is to add a query, that will display categories of the main category. Like this:
That works well. But there are problems - the Parent parameter is static, not dynamic. And the query does not exclude itself from the loop.
I think the solution would be:
- find a way to define the current category parent.
- add it as a value into the parent filter.
- define the current category id
- exclude the id from the query.
Anyone already figured out?