If they tag you, you will still get a notification (even if it is on an agreeing ID). I am not sure about just a comment inside/attached to an ID that doesn’t include a tag.
If someone wants to test, they can add a test agreeing ID to one of my observations with a comment that doesn’t tag me, and we’ll see if I get a notification (since I have notifications for agreeing IDs turned off):
https://www.inaturalist.org/observations?place_id=any&user_id=cthawley&verifiable=any