There are four fields I am requesting: two for experiments and two for experiment variations.

The two experiment fields are: `feature_name` and `feature_key`. These are not in the Fivetran-populated "experiment_history" or "experiment_result_history" table (or any other tables). However, these fields are available from the experiment endpoint of the Optimizely API. 

The two variation fields are: `feature_enabled` and `variable_values`. These are not in the Fivetran-populated "experiment_variation_history" or "experiment_variation_action_history" table (or any other tables). However, these fields are available from the experiment endpoint of the Optimizely API as sub-variables in the `variations` field of the response.

Here is a link to the output of the experiment endpoint of the API. You'll see feature_name, feature_key, variations.feature_enabled, and variations.variable_values listed in the response template. These fields should be added to the Fivetran connector https://library.optimizely.com/docs/api/app/v2/index.html#tag/Experiments/operation/get_experiment