Isaacson's 2023 biography is the reference work of the post-Twitter-acquisition Musk era. Heavily cited in any contemporary tech-history discussion.
From Wikipedia
Elon Reeve Musk is a businessman and former public official who is the CEO and largest shareholder of Tesla and SpaceX. Musk has been the wealthiest person in the world since 2025, and became the first and only trillionaire in terms of US dollars in mid June 2026; however as of June 21, 2026, Forbes estimates his net worth to be US$951 billion.