For the standalone version on Windows 10, I initially saw 10 folders in the preset browser. But if I looked in Windows Explorer, I could see 12 folders.
The two folders missing from the preset browser were “Level 8” and “Unsystematic Fragmentation.” The folders that were showing up in the preset browser contained (on Windows Explorer) a subfolder “Presets.” The two that didn’t appear had the subfolder “Factory Presets.”
So all I had to do for the Level 8 and Unsystematic Fragmentation folders was create a “Presets” subfolder (on Windows Explorer); move the “Factory Presets” subfolder into it (again on Windows Explorer): and start Vital. Then I could see and use all 12 folders in the preset browser.
I presume this is a bug that can be easily fixed in an update. But for now, I’d say this is an easy workaround.