Western Saddles Question/WIP (Patreon)

Could anyone give feedback on the variations I've done?

This is probably too early to show this WIP but I'm having a harder time distinguishing the differences in Western saddles. They don't have stirrup leathers or girths yet since I don't want to get too far if I have to change the base shape. I've marked the ones that will have double girths but if any of the others should as well, please let me know. It's not as easy to tell for some. 

I've being using this site as reference. Both this specific page and looking through the saddles they have for sale under each category. I have some limitations with the SSO mesh and textures, but I'm trying to translate different shapes best I can. 

Specifically I'm looking for feedback on the general shape, size (these are all the realistic fit right now), and accuracy to discipline. These won't be ready until probably mid-March, but I want to make sure I'm understanding my references correctly. 

Thanks!