I don't use YouTube TV anymore, but I have a slightly old New York City one that I can share.
I also have DirecTV's Ultimate package for the New York City area. While I'm using either ADB tuner or ah4c, I'm happy to provide those gists to help this project as well because I think this is a really cool idea.
Let me know if those will be helpful, especially the DirecTV Ultimate, because it has like the majority of the channels that DirecTV offers.
Also, with DirecTV, there's a project one click action to basically pull your entire guide. If you look at Olivetin, there's just like a DTVGrabber.sh script inside of the Docker container that has all of the logic. One that builds an M3U for ah4c, and there's another one that calls ADBTuner's API. Both of those involve going to stream.directtv.com and just copying a curl command out of the browser's dev tools. It takes like two seconds.
That way anyone can get their entire guide for DirecTV just merged right in without having to collect channels.
Actually, Chrome HDMI for Channels implemented something like this, which works really well. So, that might be a good repository to look at since that also runs on Windows. Regardless, let me know, and I'd be happy to provide those channelists that I've collected. I believe I also have one for Philo, although it's kind of old and might be out of date.