actually, considering that we appear to be heading backwards in time after 2000, after nixon is indeed johnson.
i understand and agree that the nixon-trump comparisons are deeply flawed, but that's only true if you look at time as flowing in the forward direction. if nixon had been born today, and gone backwards in time to 1970, he'd have probably ended up a lot like trump, in the end.
following this model, that would suggest that biden will die in his second term and be replaced by a young vice-president that is perceived as "liberal" but is really a hawk.
https://www.cnn.com/2020/07/19/politics/joe-biden-donald-trump-suburban-voters-polling/index.html