Modules not appearing in library

On my iPad Mini 6th Generation (iPad OS version 18.6.2) there are modules that have been downloaded and are organised in folders that do not appear in the library. However they are there if I search for them and I can find them if changing a tool linked to the main text.

So here is the list of commentaries from the main search:

and here is what I get when I try and link a commentary to a text: