I saw that you can sort news by title name, but I suggest to do the same with feeds in a folder (by feed name).
Or maybe it is possible already?
this is already possible. You need to define your folder/feed to show column "Feed Title" in the news panel.
Therefor you go to
Right click on feed -> Properties - > Columns
and add column "Feed Title".
Afterwards you can simply select a folder containing those feeds and sort the news by "Feed Title" by clicking on the header "Feed Title" in the news panel.
Oh indeed, thanks!