This dummy site (Nov 2018) is available here.
The XML is an export of this site which can be imported with WordPress.
It should load all the content of this site for testing. All other pages/posts should be removed beforehand.
The other settings are Twenty Seventeen theme, and the menu may need to be added to the theme.
If you are load testing, dummy users will need to be created.
The following WP-CLI command can help with user creation. It creates users with the format username[#] and a use_a_password.
for SW_USER_I in {10..10010}; do wp –allow-root user create “username${SW_USER_I}” “username${SW_USER_I}@example.com” –user_pass=”use_a_password” –role=”subscriber”; done;