I've used Scribus for almost everything so far. I planned to migrate to Affinity Publisher and got myself a copy on sale right before the Pandemic hit. But then it did hit, and I got super depressed, and haven't really published anything since, aside from fulfilling the in-progress Kickstarter at the time, which was already grandfathered into Scribus. So I guess it's still technically Scribus. I used to use Inkscape for the character sheets though. And the cover art, usually. If it's small enough, sometimes I just use LibreOffice or even just the PDF export functionality baked into Google Docs, but if it's more than like three pages it's always been Scribus.