Have books been written compiling the fatwas of the Companions, such as Ibn Abbas, in fiqh and tafsir, and what are the names of these books if they exist?

The fatwas of Umar ibn al-Khattab have been compiled in the book "Fiqh Umar: A Comparison with the Fiqh of the Most Prominent Mujtahids," and the tafsir of Ibn Abbas in the book "Tanwir al-Miqbas min Tafsir Ibn Abbas."

Indeed, Malik, Abd al-Razzaq, Ibn Abi Shaybah, al-Bukhari, Ibn Hazm, Ibn Abd al-Barr, and Ibn Qudamah diligently recorded the sayings of the Companions regarding jurisprudential issues. Similarly, al-Tabari, Ibn Kathir, al-Qurtubi, and al-Suyuti meticulously cited their sayings in the interpretation of the Qur'an.