Yes, Newsom would be a leading choice because of name recognition, ability to raise a massive amount of money, and being a pioneer in the LGBTQ civil rights movement. But that doesn't mean he'd be the best choice.
Some names:
https://www.businessinsider.com/democrats-candidate-president-2024-joe-biden-2022-7?op=1
Personally, I still like Amy Klobuchar, and being a midwesterner would help pick up states that a Californian wouldn't help in.