I recently started to look into presets on My Exchange and found some interesting ones.
Unfortunatly I cannot find a way to install the extensions on my Mac.
The syncing is not working, I tried to install the zxp files with not success. Tried Anastasiy’s Extension Manager which does not see lightroom, ZxpInstaller, ExManCmd but even if it installs, it will not show in Lightroom and just copy the zxp file in another place. (~/Library/Application Support/Adobe/Extension Manager CC/EM Store)
Also the syncing is working an my other non-catalina laptop.