Google One does the darknet monitoring. But then . . . it’s google. However you can add a few more emails to the list to monitor. I paid for Google One due to photos. Haven’t gotten around photo self hosting yet.

yes I am very happy with proton paid account. The VPN is blocking ads as well. They are well worth the money.

I have proton subscription for mail, vpn the works. Just switched to Proton Pass and very happy. Auto creates alias emails on signups so my real email is not out there.