This article published in july 2023 Lindsey Buckingham Tops The List With $150 Million (250 before the divorce or so I understand. Christine and Stevie are mentioned with close but smaller numbers ($105M and $120M respectively). I don't know how reliable is that info. Christine and Stevie got far more singles, I'm not sure but at first sight it should mean far more profit?
Though Lindsey partially produced some albums. I don't know if that mean he got more money from album sales.
Or it just mean he was more organized with his investments and savings.
https://www.thethings.com/which-flee...of%20marriage.