more than the list of websites, I appreciate the 10-second method you describe. I think it's worth explaining to developers and site owners that there are indeed some simple tricks to quickly assess a web page without having a deep understanding of the WCAG. Personally, I like removing all the CSS styles (with the Web Developer Toolbar in Firefox, shortcut is Shift+Ctrl+S). If the page is still pretty readable, with no clumsy technical code; if it shows a neat heading structure; if lists appear well structured and appropriately used; if all text, is in black (except links), left-aligned, and with its default font and size; then it's been probably properly coded, HTML-wise.
I should mention one caveat to all of this. Businesses that are required to comply but don't have the ability to bring their websites into compliance can provide an accessible alternative to provide the same information, goods, and services that they provide online, like a staffed phone line. The trick, however, is that this option has to provide at least equal access, including in terms of hours of operation. And, as we know, the internet is around 24/7, so good luck with that. 
The ADA is the Americans with Disabilities Act, passed almost 30 years ago in 1990. This act was originally put in motion pertaining solely to physical location. It requires establishments to provide people with disabilities easy access to various levels throughout the business. This act was set to achieve an equal experience to all people, handicapped or not.
The ADA requires that title II entities (State and local governments) and title III entities (businesses and nonprofit organizations that serve the public) communicate effectively with people who have communication disabilities. The goal is to ensure that communication with people with these disabilities is equally effective as communication with people without disabilities.