Watched Louis Rossman today, and he's part of the team behind a new app for watching online video content - not just youtube, but nebula, peertube, twitch and more.
adblock already integrated, works amazingly with a quick test on my end - it's an app in the Lemmy spirit
(it's got a paid model similar to winrar, you don't have to pay - but they do want you to - opensource and all)
Grayjay can do this - there is a toggle in the settings for the YouTube addin to sync watch data with your Google account.
It's a one-time sync though. If I want history from what I watched on my desktop today I have to resync.