I realized I might have worded the above in a confusing way. You may have already understood in spite of that just in case there are 2 primary families of Dacty

I realized I might have worded the above in a confusing way. You may have already understood in spite of that just in case there are 2 primary families of Dactyl keyboards, the Dactyl, and the Dactyl Manuform. The Manuform version has the better thumb cluster IMO.