there kind of is nobody else.
One thing we've figured out about representative democracy is that name recognition amongst voters is critical. In fact, amongst floating voters, it may be the single most important factor. The well known figures in the Democratic party are either too divisive or too low wattage to stand a better chance than a Biden re-run.
If it comes down to Trump vs Biden Pt2, it might come down to who resists mental degradation best over next two years