If you were playing an RPG with a Chaplain class, what are some abilities you would expect to have?

Basically standard fantasy medieval but with iron age political turmoil. Every few decades some noble family gets annihilated by a dragon or giant, so there's always new abandoned dungeons and strongholds to be rediscovered.

I feel like I should have provided context in my original post, but I more wanted vibes. I'm making a rpg with 5 classes, and I am dead set on the only spellcasting class being the Wizard. So, the clericish class has to have some other role. Settled on something closer to a Bard as the main thing, where you can make an Inspiration pool of d6s that your party can scoop up dice from to add to their attack rolls and skill checks. Most of the obvious stuff that would normally belong to clerics, druids, warlocks, and paladins is all bolted to the sides and corners of the alignment chart. I'm looking for how to flesh out the meat of the class, the core stuff that everyone gets.

If you're curious, these are the 5 classes:

• Fighter: A mix of Fighter, Barbarian, and historically accurate knight stuff
• Apostle: Depending on your alignment and choices, either a Cleric, a Druid, a Paladin, a Warlock, or some mix of all four
• Ranger: In addition to normal ranger stuff, this is also the Spy class.
• Xia: Cultivation genre stuff like shattering bones with your guitar, riding your flying sentient sword, and summoning demonic spirits to fight your enemies. Also, punching real good.
• Wizard: You have a big ass spellbook which you copy spell scrolls from, and if you do really well you can start forging magic artifacts in your wizard tower.