Though I agree that Gmail spam filtering is top grade, or close to be so, it still sends to spam a statistically significant number of emails from IETF and ICANN mailing lists I'm subscribed to. It depends as well on which account I should receive those emails.
Yes, that's mostly the DMARC problem. We're painfully familiar with it.
While I understand and totally accept that there might be issues with the respective senders' configuration; with mailing lists at least, spam filtering is more of a duty of the mailing list admins. ...
One day I asked a guy at Google why they don't just whitelist incoming mailing list mail, since they clearly have a good idea where the list hosts are. He said that legit lists send spam (actual ugly spam, not filter errors) all the time, either because a subscriber's account is compromised or the list itself is compromised. Accurate filtering is remarkably complicated. Regards, John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly