Both links for David Chapman go to the Vividness blog. I think the first link should be
https://meaningness.com/
A good description for which is right at the top
Better ways of thinking, feeling, and
acting—around problems of meaning and meaninglessness; self and society;
ethics, purpose, and value.
Also, for the subreddit, you only included r/streamentry but there's also r/themindilluminated which is about as populated. There is also r/unifiedmindfulness which is not as populated. You could link to each individually or create a multireddit for all three. I already have one for my own use which I just made public:
https://www.reddit.com/user/dadakinda/m/medtat/
That's all I noticed. That's an extensive list.
