Other: Kristi Noem, but note that I don't know much about international affairs and it's quite possible people like Jair Bolsonaro handled it much worse than even Noem.
Bolsanaro said COVID was basically the flu, and at first said he wouldn't get vaccinated
The funny part is Trump did a lot of this, but you and most other Republicans will not notice that. This is literally projection. And if that is all he did (he probably did more, I'm sure, given his record on other issues), then he's about as bad as Trump and better than Noem.