Plot twist: The real Biden died a long time ago for being .

Top right and bottom two could be the same dude years apart during accelerating dementia, top and middle left look like the same dude years apart, middle right is neither.

Time and dementia can really change a person's look, so can aggressive stimulants(hard drugs) like the ones they have been using to prop him up for pressers and international visits.

I bet the man (biden or not) has tubes either in his chest or arms at this point, I'd bet this is the same biden because his proximity to his young family on a regular basis would be a good way to manage his dementia and also get blood transfusions from a good match because the transfusions would be a good way to boost him without stimulant side-effects.