If you want a truly personal "Regfont" based on your own writing, you can digitize your handwriting into a usable font file (TTF/OTF).
The historical weight of regfont becomes apparent when running vintage software. Older applications (pre-Windows 2000) often relied on a different Registry path: regfont
LOREMIPSUM Font Generator : Simple "type-and-copy" interface for desktop and mobile. If you want a truly personal "Regfont" based