In terms of sheer enthusiasm and momentum, Trump 2016 definitely is in a category of its own. Biden 2020 does appear to have a stronger campaign than either Hillary or Romney at least, but I don’t think it compares to the Trump 2016 movement.
Yeah, I don't see "Ridin' With Biden" or "No Malarkey!" becoming the new MAGA or anything, but his branding is better than "I'm With Her" or whatever the hell Romney's was.
"Yes We Can" -- while not a successful slogan by its candidate -- remains one of my favorites just because it's short, it's sweet, and it lends itself to chants at rallies.