UK Home Office Design System Accessibility Standards - https://design.homeoffice.gov.uk/accessibility/standard
German Government Accessibility Standards - https://webtest.bitv-test.de/index.php?a=dl&t=s
US Government Accessibility Testing Approach Guidelines - https://section508coordinators.github.io/TrustedTester/
Swedish Government - https://trg.digg.se/manual/
Latvian Government - https://pieklustamiba.varam.gov.lv/