I made a page where you can find all characters supported by Pony Diffusion.
You can visit it at: https://ponychar.com
Simple feature: copy prompt, search characters, sort and group by name or series.
Each entry go with prompt ready for copy, as well as official art + generated images for comparing.
The reason I made this is: Despite that we already had some unofficial lists, the data is not really validated or checked. I have compiled, cleaned the list and render all of them with PonyAutismMix, then MANUALLY check ~2000 characters to confirm each entry.
With this, we should be able to have a compiled list of characters that can be generated using Pony without Lora. I will update it if new version of Pony is released too.
Feel free to contribute if you know secret prompts/hash of some characters, as well as missing data too.