Ian was curious about these numbers, so here they are, courtesy of the LBD episodes spreadsheet. These numbers are somewhat problematic (!), in that they are based on total views through 9/20 for early episodes, and 1-week view counts for episodes after that. So they are undercounting total views pretty substantially.
According to YouTube the LBD channel actually has 21.3 million total views, rather than the 11.2 million views the spreadsheet currently gives the channel credit for. The next-highest channel, The Lydia Bennet, currently has 3.9 million total views according to YouTube, but just 2 million according to the spreadsheet.
Still, kind of interesting, if you’re into that sort of thing. Numbers!