My partner found another community at .ml that had a discussion thread up. I can understand if people are leary about posting there though, so I'll keep posting to both
Then you also missed out on Super. Both take place in between Buu and end of Z. Super released first, but Daima takes place before it
Minor Spoilers
spoiler
In Daima, a new threat from Demon World has turned our protagonists into children! They must venture into the Demon Realm to save Earth!
Super is closer to a direct continuation of Z. Lots of fan service, and the power scaling can get a bit out of hand, but I liked it a lot. The first 2 movies (Battle of God's and Resurrection F cover the first 26(?) episodes. You can do either or. I think I would recommend the movies but it is up to you. After the final episode there are two more movies. Broly and Super Heroes. They are not covered in the television series
Finally, the DB Super manga has quite a lot of things towards the end that are not in the series, beginning with the Moro Arc :::