Is this your PClinuxOS installation?
Those fonts that show code page symbols like this: https://i.imgur.com/QPANE00.jpg are system fonts.
Find them in the system like this. https://i.imgur.com/P5xAYRM.jpg Postscript fonts.
Not much you can do, it will be an updated library problem somewhere. Needs to be reported to http://www.pclinuxos.com/forum/
As a stop-gap if you can find replacement ttf fonts and add to the Gimp fonts folder the fonts list doubles up, but the font does show. https://i.imgur.com/FNidpOV.jpg
Not the way to do it, pclos gimp needs fixing.
Those fonts that show code page symbols like this: https://i.imgur.com/QPANE00.jpg are system fonts.
Find them in the system like this. https://i.imgur.com/P5xAYRM.jpg Postscript fonts.
Not much you can do, it will be an updated library problem somewhere. Needs to be reported to http://www.pclinuxos.com/forum/
As a stop-gap if you can find replacement ttf fonts and add to the Gimp fonts folder the fonts list doubles up, but the font does show. https://i.imgur.com/FNidpOV.jpg
Not the way to do it, pclos gimp needs fixing.