While it is possible to use office type apps (e.g. LibreOffice Writer etc.) to produce some nice video credits and export these as PNG images to scroll in Shotcut, I still believe that the text:HTML filter has (had?) much more potential for creating some of the best scrolling animated credits.
I will still be using this for my own credits once Text:HTML is removed from Shotcut - either by using the last version of Shotcut that supported Text:HTML, or by using OBS to create a “credit video” that I can import into Shotcut as a clip. As an example of what could be done (albeit one that is slightly “over the top” to demonstrate the capabilities) see the following video:
This was created using my “Movie Credit Generator”: