As a personal complaint, in the west it's hard to understand what any of those words mean or where to find an authoritative source. I can't read sites like https://xtls.github.io/
Reading between the lines tells me they're discontinuing Pixel AOSP support which is a pretty big blow with zero warning to those who used them as de facto reference models.
Kind of. You can get the nameservers (and glue records if available) for every domain under a TLD if the TLD makes their zone file available. See https://github.com/jschauma/tld-zoneinfo