I finally solved how to get FontBase fonts to work with Inkscape — and potentially fonts that are managed with a different font manager. I use way too many fonts to just “install them all into Windows” without having problems. Switching to a font manager solved that and allowed me to access my fonts as needed in software like Affinity Designer, but I couldn’t get them to work in Inkscape.
With the newly released Inkscape 1.0, I felt it was time to try out Inkscape again — I’ve always liked how it was trying to provide all the functionality of CorelDraw (without the huge price tag). Free is a compelling price.
But I need my fonts to work, or it isn’t worth anything!