I'm uploading a document called "Essential Skills to Participate in One CCI-USA Event". This was adopted by the USA CCI teachers and Community Committee in December 2013. It was provided by Gail Fuller following discussion at the 2021 CCI Europe Business Meeting on 26th July 2021.
As well as skills, it refers to CCI culture, and to accreditation. I note that it does not contain a complete list of the interventions commonly taught in current UK fundamentals.
You can find it on this website as an article in the group 'Promoting Co-counselling.