Somewhat ironicaly the one republican who is probably running with the easiest electoral path to beat Biden is Larry Hogan.
A very popular and successful republican ex governor of a very blue state his politics aren't about white resentment, LGBT demonization, or pro coup lies about election results.
That would attract key swing demographics especially suburban white women, registered independents, conservative democrats, blacks and Latinos.
Of course the republicans will never nominate him.