I think more potential responses, especially for strange and stupid, would add allot on it's own even without more leader types, along with some of those ideas you wrote down having to do with reasons for banning certain things and the lack of beliefs aside from hate and suffering or light and happiness.
But for new leader types I'd say militaristic/warrior spirit, so someone who wants to challenge your champeon or have a skirmish before they believe your worthy for trade/alliance, promises to spend the money on troops or refuses it all together when gifts are given, might come to assist you with battles, will request troops from you when they get low but will act like a dick about it if you don't have a great battlescore compared to them, might be more hesitant to sell you their own troops if you have a not great battle score, might be upset with you popularity wise for using mercs/fruit or losing battles, and will always refuse vassalization without a bit of a fight and only if you have at least double their total battlescore.
So basically Klingons... LOL
You could also do someone interested in gaining powerful and unique things, esoteric or magical/spiritual, but not at all interested in gold or troops/conquest.
So not just money like a merchant but orbs, units with magical properties especially demons, maps, maybe they would even grab artifacts if you didn't fast enough, certain objects from knight quests, tales from odd places you've been too during exploration, interesting monsters you've found, ETC.
Another which should probably be rare or only available after the first full kingdom set for balance wanting only conquest and domination might be super interested in land and troops at any cost to the point of asking or demanding it from you preemptively, try to vassalize you but never allow them selves to be vassalized under any circumstance, take over absolutely anything you don't grab first in exploration and even burn down villages and destroy stuff that won't make them good money, and if you get too powerful compared to them they will wage invasion against you to the last man.
They should also spend all their money on troops as soon as they get it, be totally down with slavery and go after the slavers fort, , fruit farm, defensive forts, and mines first thing, and always be threatening and superior in communications with you, with popularity with them going down the more lands and cash producers you grab your self.
Okay after all that, here are the bandit and vampire suggestions, taken from post 1298 and post 1697.
Maybe as a bandit king, bandit related criminals shouldn't show up in the courtroom?
Their should be increasing consequences for popularity above 0 as a bandit king, Also, if you have low numbers of bandits in your kingdom VS legit soldiers, it should make things harder on you with the bandits.
As a bandit king, attacking bandits in any capacity, such as imprisoning them, or overrunning those who've taken over mines, forts, those at the black market, ETC should result in punishments from the main bandit group of some kind, or at least bandits leaving your army.
If you are a bandit king, you should be able to bribe bandits at the forts, mines, blackmarket ETC to abandon their leaders and join you instead, after all they would respect your power I assume, especially if you had tons of your own bandits.
Small bandit groups and those holding forts/mines might be convinced through strong arm tactics or payment to join you as a bandit king, or you could direct them to attack others for free.
Man accused of forming bandit group should either not show up, or you should have the option of asking to incorporate his bandits if your a bandit king.
Taking hostile action against a small bandit group as a bandit king should potentially result in that group going to the main horde and asking them to make you stop. If you don't stop, or maybe pay them to ignore it, they should break the truce and attack/rob you all as one.
Vampire king option where everyone good hates you and light/fire races do extra damage against you, and you must deal with the Buya councel as your masters, and balance the need for blood with the need for popularity, as well as inter house wars and a randomly assigned house at start?
Also if the vampire king option becomes a thing, than dealing with wild vampires via violence, blood bribing, or absorbtion might be an idea, but obviously your people would not appreciate you allowing them to kill who ever the fuck they choose, and maybe keeping them under your control would be hard, plus Buya might not be pleased about your supporting them.
You'd also have to feed your self I suppose... Maybe with criminals in the prison or as an extra option in courts along with dungeon and death? But I can also imagine guards being disgusted and word getting out.
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Lets demonstrate this: stand still Thom...