I will happily watch Bluey (as will my wife) if it happens to be on and the kids aren't around, I can't say that for any other cartoon they watch, even ones I can appreciate for the educational value they provide the children (our daughter loves Octonauts and learning and telling us all about sea creatures).
I can't think of another cartoon targeted at that young an audience that I'd even consider sitting down and watching a half-dozen episodes of without a kid around, but I can imagine doing that with Bluey. Like I've for-sure left it running for multiple episodes after the kids left the room, and enjoyed it.
Older-audience stuff like Avatar: The Last Airbender or Justice League Unlimited, oh yeah, for sure, but something specifically aimed at lower-grades elementary school kids? Nope, can't think of another, not even nostalgia shows from my own childhood. I'd maybe do an episode just like "oh wow, remember this?" but not a session watch.
