Unfortunately, I'm running Linux for a long list of reasons, which limits my options (yes, Wine is an option, but I've tried that with Notepad++ and the result

Unfortunately, I'm running Linux for a long list of reasons, which limits my options (yes, Wine is an option, but I've tried that with Notepad++ and the result is a UX that's almost as bad as using LibreOffice/GIMP straight away. Otherwise I'd have certainly gotten both MS Office and some older version of Photoshop.