I’ve been a big fan and user of Ublock (and now uBlock Origin) for a while now, but hated having seperate whitelists on all my devices. I recently found out you can indeed sync those lists if you sync settings within your Chrome or Firefox browser!
Simply right-click on the uBlock icon and click on Options
And on the first page that pops up, you’ll see this option which you should check off:
On your various settings, rules, and whitelist pages you should now see these arrows:
Click the up arrow to upload your current list and then on your other devices, you can enable the setting and hit the down arrow to download that list. And you’re all set!