Based on the information provided in the knowledge sources, I can explain why you might not be seeing cohorts created using Group Analytics when using the List Saved Cohorts endpoint.
The List Saved Cohorts endpoint (POST /cohorts/list) returns all cohorts in a given project, including their name, id, count, description, creation date, and visibility. However, the knowledge sources do not explicitly state that this endpoint includes cohorts created using Group Analytics.
Group Analytics is a separate feature in Mixpanel that allows you to analyze data at a customized group level, such as by account or device, rather than just by individual users. It's possible that cohorts created using Group Analytics are not included in the standard cohort list returned by the List Saved Cohorts endpoint.
To confirm this and get more specific information about retrieving Group Analytics cohorts, you may need to consult Mixpanel's documentation on Group Analytics or contact Mixpanel support directly. The knowledge sources provided don't contain enough detailed information about the interaction between Group Analytics cohorts and the List Saved Cohorts endpoint to give a definitive answer.
For more information on Group Analytics, you can refer to the Group Analytics documentation, which explains how this feature works and how it differs from standard user-based analytics.
If you need to access Group Analytics cohorts specifically, you might need to use a different endpoint or method that is designed to work with Group Analytics data. However, this information is not provided in the given knowledge sources.
