People are selling fonts on Etsy. Many are free fonts simply resold as commercial releases at rock bottom prices. I’ve seen some free fonts being sold by multiple Etsy sellers. In some cases they’re actual font files, in other cases they’re just outlines or embroidery fonts. If you have time to dig around you might find your designs for sale there, especially if you’ve released fonts for free. Unfortunately they have dozens of pages of fonts, so it’s probably impossible to find them all.