That's tough. The standards for acceptable are tricky.
I like ALL of them in a sense. I mean, they all had some endearing factors. Donald Trump has them, too. There's just no WAY in hell I would want that man to be the President of the country. Sometimes, I still catch myself saying "Donald Trump as PRESIDENT?"
But, you want specifics, I know. Well, I like Jimmy Carter for the simple fact that he is one of the VERY few US Presidents where troops were not deployed somewhere and some kind of military action took place somewhere, somehow. I think there's only been like 2 or 3 administrations that can say that... if that many. So, he has that going for him. He kinda got screwed on the Iranian Hostage outcome, but, oh well. Carter was/is a really good human being. He had no business being president. He was too much of a humanitarian. If we were a bit more of a highly evolved society, he'd be ideal. We're not very highly evolved at all. Example; We're all on a Tar Heels fan board and
all of us can't even get along... Radarians and OOTB'ers? Puh-leeze.
Andrew Jackson was actually able to get the USA out of debt the one and only time it ever was.
I like to think JFK would have never gone full-tilt into Vietnam like Johnson and Nixon. That would have helped a lot, if America had stayed the hell out of there. Korea, too!
Wars are so destructive to human society and it's evolution that you can barely measure all of the damage. Sometimes you find out it's still doing it. The Civil War, for example... still being fought on smaller scales every day. Veterans of any wars that are still alive are still carrying the memories. I'm a peace advocate above all. Peace makes everything work better.
Not to mention, wars are such obvious giveaways for masculine insecurity. a bunch of prick-waving.