The discussion revolves around the difficulty in finding the styleguide in Discourse. pfaffman initially looked for a setting to display various page styles but couldn’t find it. Moin directed him to the styleguide plugin, which was exactly what he was looking for. pfaffman suggested that it should be mentioned in the theme settings page for easier access. Additionally, Lilly mentioned a related group permission setting in admin, and piffy and Tris20 expressed surprise at not knowing about the styleguide’s existence. Heliosurge also shared a link to the theme-component plugin to aid in development.
I’m pretty sure that there is some setting that determines where there is some route you can visit that willl display all of the various page styles (topic list, categories, settings, profile, etc) so you can see how things look when you are developing a theme.
I’ve looked for at least 15 minutes and can’t find it.
Are you looking for styleguide?
WHAT. I didn’t know this was a thing 
There is also this Customization > Theme component
To help with development
Same! This would have so useful to know about when I was working with the SVG iconset and couldn’t figure out which name I needed to use.
Also, I’m ashamed to admit it, but the styleguide/atoms/spinners got me good. Wasn’t paying attention on what I had clicked and was wondering what was taking so long to load 
