Ok, so I saw this topic like 6 hours ago and started reading it and then reading some more and watching your vid and some of the videos linked and oh boy can I relate to all of that.
In fact I'm in a very similar spot as you are.
My 7 and 9 traits always come very close when I do the Enneagramm with 8 being the runner up and all the stuff that you write about being relaxed and inactive resemble so hard, that it almost hurts to read this.
As you I haven't really figured out what type I'm really am, as I have both tendencies to 7 and 9 and can't nail it down.
I'm going to watch those 1 hour long videos on 7 and 9 that have been posted earlier this evening and get back to this thread eventually when I have some more insight.
Sorry, this is probably not really useful to you, but it sure as hell is for me, so thanks for starting!