The Watch History playlist:
HL list does not exist anymore, most probably because YouTube moved it’s history into
myactivity.google.com, a central place where you can find every activity related to your Google account.
The Watch Later playlist:
It is the same
WL as back in 2019.
The Liked Videos playlist:
Things got a bit simpler, and the liked playlist now simply has the ID
The Uploads playlist:
This also got simpler. Now you only have to change the second character of the channel ID from the char “C”, to the char “U”:
// today you just have to change the second char to get the ID of the “Uploads” playlist “UCBvX9uEO0a3fZNCK12MAgug” -> ”UUBvX9uEO0a3fZNCK12MAgug”
Getting the channel ID for custom URLs:
If the channel has a custom URL like
https://www.youtube.com/c/xdavidhu, just search the page source for