I have the same general opinion around "categories of email noise from a company", but I find Github is possibly the best one I know of. It's not perfect. Jira is an example of a bad one (while also having a high volume of email if you set it up for such).
Specifically, for any who haven't noticed, there are several additional email addresses in most emails you'll receive if you're watching Github Repos, and you can filter on these:
So I have a series of filters for several of those emails, like "If 'mentions' in CC'd put in important folder", plus some filters for "If '[reponame]' in title, put in dedicated folder". And then all other github emails go to some other folder, and never my inbox. (That all said, I may be completely misunderstanding you; as I don't think I deal with "comfirmatory 2fa emails)
There are also quite some headers GitHub sets which often can be used for filters. E.g. instead of checking for `[reponame]` in the title, you can check the `List-ID` to filter for a specific repo.
Specifically, for any who haven't noticed, there are several additional email addresses in most emails you'll receive if you're watching Github Repos, and you can filter on these:
https://docs.github.com/en/account-and-profile/managing-subs...
So I have a series of filters for several of those emails, like "If 'mentions' in CC'd put in important folder", plus some filters for "If '[reponame]' in title, put in dedicated folder". And then all other github emails go to some other folder, and never my inbox. (That all said, I may be completely misunderstanding you; as I don't think I deal with "comfirmatory 2fa emails)