Washington, Charles II, Elizabeth I.
To look at the evidence... both Charlie and Liz are bad examples (if you look at the latter end of their reigns) as both had to eventually resort to stringent authoritarian actions. Heck, even Washington went "that way" in the end as well (or should we not talk about his putting down the Whiskey Rebellion?). Perhaps the best way to put this is that the Nomads who get it wrong--are oppressive from the first. While Nomads who get the good press of "getting it right"--are oppressive at the last.
Charlie worked with Parliament for as long as he could, but closed Parliament when they continued to get uppity and were sticking their noses in trying to establish who would succeed after him. This was a point of principle that Charlie wasn't going to budge on. His daddy had been killed by Parliament which had usurped plenty of power in doing so, so it was a personal matter to him, that he wouldn't give Parliament this right, though I believe he expected it to be taken by Parliament shortly after his death--but the principle he stood by was that he wasn't going to be the one to allow them to take it. He also wasn't going to allow them to hang every Catholic in England--though Parliament wanted to. He instead insisted on religious toleration. Which again, Parliament didn't really want to hear about as they were too busy listening to a guy who went on and on about how there was a "Popish plot" to kill the Protestant king (the plot included the Queen, who was a Portuguese Catholic by birth). I mean, sure you could blame Charlie for being "unreasonable" about letting Parliament do everything they wanted, but keep in mind they wanted to make Catholics second-rate citizens and he starts to look a little nicer there.
As for Liz--or "Good Queen Bess"--I think it's safe to say that after so many assassination attempts you start to get a little paranoid for a good reason. Her police state had
odd rules to be sure--but they usually had their rhyme or reason (such as not wearing cloaks at court so her men could reach their swords faster to protect her in case of assassination), and of course there was the wool monopoly her kingdom maintained for the "sake of the economy"--speaking of which there was a law in Liz's time that everyone had to wear a wooly hat on Sundays in order to "support the wool trade" for the "sake of the economy". Sure you can blame Liz for being rather horrible, but keep in mind that there were a lot of people who actually did want her dead. She was #1 on the Pope's hit list since the Pope actually made it so that it wasn't a sin to kill her--don't know how he arranged that with God, but whatevski. And of course the security and safety of the English Wool Trade was the basis of the economy, so black market dealers (like that notorious John Shakespeare, father of one William) had to be put down--for the sake of the economy.
As for Washington, he'd lived and breathed to see the establishment of two governments for America (one ramshackle one during the war, another immediately there after that fell apart because no one could agree) and was on its third attempt, of which he was the head of. He wasn't going to see it fail and flounder simply because a couple of country bumpkins had little-to-no concept of money and traded in Whiskey--and so a tax on Whiskey was almost incomprehensible to them. He was going to do what he had to do for the sake of the country: put down the Whiskey Rebellion.
Keep in mind that a Crisis is a time when everyone has "gone mad" and the populace is baying for blood of some kind. Anyone who can keep a bridle on that irrational passion with good "common sense" usually comes out looking rather good to historians. There comes a point in a Crisis/early High that for the country's "best interest" giving in to every whine or whim of the public becomes irresponsible and not to mention impossible without it completely descending into chaos and so actions are "taken" to ensure that the nonsense ends once and for all. It's when Nomad leaders finally take the step up into evolving into what they'll be for the High: Authoritarians. Because how can they ensure that this mess is properly "dealt with" if there's still "hangers on" who keep wallowing in the mud? A world of chaos, that's no place for their Artist children to come of age in! No, no, no--it shall be dealt with!
But IMO we need Nomads to be in power at the very least by the latter end of the Crisis, if for no other reason than that decision to be made. If Nomads consistently hold back on the leash they might stifle and suffocate any genuine reform movement, this is true. However, if they let "just enough" reform through, while still keeping the dogs at bay, they might be able to come out rather well with regards to establishing a High that's reasonably decent, and that gives them good press in the history books thereafter. IMO that's why having Prophet/Nomad cuspers usually turn out all right (because they let just enough reform through--without letting the chickens flying the coup completely). But you can't always be sure of getting a Prophet/Nomad leader, in which case, a core Nomad works as a back up if tempered with a very good Prophet adviser--a la: William Cecil & Good Queen Bess, and one could argue Ben Franklin for Washington perhaps...
It also of course helps if said Nomads aren't part of the "frothing mad" whims, but distinguishing that is another matter entirely.
~Chas'88