538 has kept running aggregated polls of approval/disapproval daily, averaging them all together and comparing day-by-day with those last dozen Presidents. Out of every one since Truman, presumably when the data starts, Rump is the only one whose approval rating literally never touched 50%. Even Gerry Ford hit that mark.
Of course he's been plummeting since his little putsch attempt, somewhere around 36% of "all adults" whether they voted or not.
The other thing that stands out comparing Rump with any other POTUS is how steady his line is. Normal Presidents see their "stock" spike when they do something good or plummet when they do something stupid, but Rump's been chugging along around the same level continually. That's an indication of a cult.