Not a comprehensive list but since 2011 each have lost to (not counting the Top 4):
Federer – Roddick, Berdych, Tsonga, Gasquet, Melzer, Monfils
Nadal – Rosol, Verdasco, Mayer, Fish, Dodig, Tsonga, Ferrer
Djokovic – Tipsarevic x 2, Isner, Del Potro x 2, Tsonga, Ferrer
Murray – Chardy, Gasquet, Berdych x 2, Garcia-Lopez, Ferrer, Young, Bogomolov, Bellucci, Anderson
So, Nadal isn't the only one who loses to nobodies
Both Murray and Djokovich have less losses than Nadal. Federer has more but he also has A LOT more wins. Meaningless stats that are not indicative of anything, except maybe Federer's crap ton of wins, but you get the point. Things usually find a way to even themselves out and if his H2H is good but he still isn't the GOAT, then his game is obviously taking a hit somewhere important.
It's common sense and that is why H2H doesn't mean jack. It is just one minor part of the equation and the Nadull tards need to stop championing it.