A while back I think @dudedarkmatter.bsky.social mentioned a proportional relationship between a_0 and Lamda.
This is a bit fringe, but an interesting related paper none the less…
doi.org/10.33774/coe...
doi.org
A Cosmological Origin of the Infrared Gravitational Scale
A characteristic acceleration scale of low-acceleration gravitational phenomenology — the transition scale of the Radial Acceleration Relation and the zero point of the Baryonic Tully– Fisher Relation...