The Arbiter
A beacon of light in the darkness. The last shimmer of hope when everything is lost...
or she can be a high-end escort wearing a fancy hat... Whichever you prefer.
She's been around for a while and seen a lot of things, so she has very diverse dataset.
Does well in both anime and realistic fantasy style artwork (not muh place for someone who wears a gold winged helmet in the modern era) but also fits in well just about anywhere.
(She wasn't really made for pornography, but she's a paladin who's no stranger to some girl-on-girl encounters after a couple of glasses of wine. Ha!)
If you don't mention her helmet in the prompt, she's likely to wear gold winged hair clips or a gold circlet with wings. She doesn't always carry her blue greatsword, but if you mention it, she'll know the one you're talking about.
In the SD1.5 versions, she wears pauldrons more frequently along with her gauntlets, bracers and greaves. She's more likely to have bare shoulders and legs from SDXL to Flux. She learned most of her "action oriented" poses after SDXL 1.0, so if you'd like to have her in more "confrontational" images, I'd use Pony or Illustrious:
An, of course, she looks great in Flux, but you'll need to use additional LoRAs if you want to get her naked.
THE AUDACITY!
If you're having trouble summoning the Arbiter, just mention her name "Arbiter" or her fancy hat by calling it a"gold Valkyrie winged diadem helmet" or any of the other words I've highlighted in green above!