People ask “Can you show me an example of an accessible website that covers [topic]?” fairly regularly.
I don’t have time to go check all the websites in the world (most of which fail) but when someone else posts info, I’ll stick it here.
In the meantime you should start with these sites that aggregate WCAG confomant sites:
Is there an accessible survey platform?
- The only recommendation I’ve seen is for Gravity Forms on WordPress.