Alexandra Ciocanel and Caroline White-...,
I thought of two books, Data Flow 1 and Data Flow 2 as inspiration for covers that work with data. Also check out the website for Stefanie Posavec and also David McCandeless. Also, have a look at the data artwork at ZKM in Karlsruhe.
http://www.stefanieposavec.com/
https://www.amazon.co.uk/Data-Flow-Visualizing-Information-Graphic/dp/3899552784