On a tangent there are two Iain Banks related books that might be of interest. The first is an academic study and overview of Banks "Iain M. Banks (Modern Masters of Science Fiction)" and, more particularly, his culture books:

https://www.amazon.com/Banks-Modern-Masters-Science-Fiction/...

The second book "The Culture: The Drawings" is slated to be released in early November (2023) and is a collection of drawings by Iain Banks that, per Amazon, details "the universe of his bestselling Culture novels":

https://www.amazon.com/Culture-Drawings-Iain-M-Banks/dp/0316...