With the thinness of the Democratic bench, we probably
do know the name of the candidate.
Brown would be seventy.
That said:
Julian/Joaquin Castro, Gavin Newsom, Keith Ellison, Robert Biden(?), Cory Booker, Bill DeBlasio, and John P. Kennedy, III, Martin Heinrich, and Tammy Baldwin are all young enough to run in 2024.
Isn't he a Muslim? A Muslim is not going to be elected President of the United States, not even in 2024. Especially if he's only a Congressman.
Also, Brown would be 86, not 70. If he were to be 70 in 2024, he'd probably be running now.
Not all ones I'd want, but here's some guesses.
Sherrod Brown, Kristen Gillibrand, Kamala Harris, Cory Booker, Tammy Baldin, Kate Brown
Kate can't be president as she was born in Spain.
With a name like "Kate Brown", I'm guessing her parents weren't Spaniards.